{"title":"Sensors","description":"\u003cp\u003eA fantastic array of sensors for your robot projects\u003c\/p\u003e","products":[{"product_id":"ultrasonic-distance-sensor-module-hc-sr04-distance-sensor-for-arduino-3-3v-5v-1-to-10-pieces","title":"Ultrasonic Distance Sensor Module  HC SR04 Distance Sensor For Arduino 3.3V-5V 1 to 10 Pieces","description":"\u003cdiv\u003e\n\u003ch2\u003eUltrasonic Distance Sensor Module HC-SR04 for Arduino\u003c\/h2\u003e\n\u003cp\u003eMeet the Ultrasonic Distance Sensor Module HC-SR04, a compact ultrasonic ranging module designed for Arduino and 3.3V–5V microcontroller projects. It uses sound waves to measure distance to nearby objects, delivering fast, reliable readings for robotics, automation, and interactive electronics.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eWide voltage operation\u003c\/strong\u003e: compatible from 3.0V up to 5.5V, so you can power it directly from 3.3V or 5V MCUs without extra regulators.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAccurate distance sensing\u003c\/strong\u003e: range depends on supply voltage — 2 cm to 450 cm at 5V (0.78–175.5 in) and 2 cm to 400 cm at 3.3V (0.78–156 in).\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, practical form factor\u003c\/strong\u003e: enclosure measures 45.00 x 20.00 x 15.00 mm (1.77 x 0.79 x 0.59 in), ideal for tight spaces in small robots and embedded projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless HC-SR04 compatibility\u003c\/strong\u003e: the module’s form factor and software are fully compatible with the classic HC-SR04, with effortless transition between versions and no wiring surprises.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability\u003c\/strong\u003e: built to endure a broad temperature range from -20°C to 80°C, ensuring stable readings in workshops, labs, or field deployments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReady for multi-pack setups\u003c\/strong\u003e: available in 1–10 piece packs, perfect for classrooms, clubs, or scalable robotics kits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat this sensor can do for you\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eObstacle detection and collision avoidance for small autonomous robots, RC cars, and drones\u003c\/li\u003e \u003cli\u003eDistance measurement for interactive projects, level sensing, and proximity-based triggers\u003c\/li\u003e \u003cli\u003eEducational experiments and DIY automation where real-time distance data enhances learning and prototyping\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to use\u003c\/h3\u003e\n\u003cp\u003eHook up the module with standard HC-SR04 wiring: Vcc to 3.3V or 5V, GND to ground, Trig to a digital output, and Echo to a digital input on your microcontroller. Send a trigger pulse to Trig, then read the Echo pulse width—the duration corresponds to distance. Use a compatible library for HC-SR04 to simplify integration with your Arduino, ESP32, or other compatible platforms.\u003c\/p\u003e\n\u003cp\u003eNote: actual color might vary slightly due to monitor and lighting. Please allow a 1–2 cm measurement deviation due to manual measurement. Each order can include 1–10 modules, making it easy to scale up your project or classroom kits.\u003c\/p\u003e \u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd34de08cb2674907a46204b5e8c965f5R.jpg\" style=\"width:1380px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sd34de08cb2674907a46204b5e8c965f5R.jpg\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S963075ec436c49d4bd1fd41f521b5f4al.jpg\" style=\"width:1380px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S963075ec436c49d4bd1fd41f521b5f4al.jpg\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sbdfd13c4119f4b3cafe3d24f3a02aa01O.jpg\" style=\"width:1380px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sbdfd13c4119f4b3cafe3d24f3a02aa01O.jpg\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sc4fa92917dfd4fab84324d298d703095M.jpg\" style=\"width:1380px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sc4fa92917dfd4fab84324d298d703095M.jpg\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd56c6d6f0b784ccb8ca101c996879435Z.jpg\" style=\"width:1380px;\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sd56c6d6f0b784ccb8ca101c996879435Z.jpg\"\u003e \u003cbr\u003e \u003ctable cellspacing=\"0\" cellpadding=\"2\" bordercolor=\"#000000\" border=\"1\" style=\"width:554px;\"\u003e\u003ctbody\u003e\u003ctr\u003e\u003c\/tr\u003e\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"10pcs","offer_id":56769492975964,"sku":"14:193#10pcs","price":22.0,"currency_code":"GBP","in_stock":true},{"title":"5pcs","offer_id":56769493008732,"sku":"14:366#5pcs","price":15.0,"currency_code":"GBP","in_stock":true},{"title":"1pcs","offer_id":56769493041500,"sku":"14:175#1pcs","price":2.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S963075ec436c49d4bd1fd41f521b5f4al.webp?v=1771497760"},{"product_id":"mfrc-522-rc-522-rc522-antenna-rfid-ic-wireless-module-for-arduino-ic-key-spi-writer-reader-ic-card-proximity-module","title":"MFRC-522 RC-522 RC522 Antenna RFID IC Wireless Module For Arduino IC KEY SPI Writer Reader IC Card Proximity Module","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the MFRC-522 RC522 RFID module — a compact, dependable reader\/writer designed to power Arduino and other microcontroller projects. Built around the MFRC-522 IC with an integrated 13.56 MHz antenna, this proximity module delivers reliable contactless communication with ISO\/IEC 14443A tags, including common MIFARE Classic and Ultralight cards. Connect via SPI, load a few lines of code, and you can read card UIDs, access data blocks, and unlock a world of interactive, credential-based projects.\u003c\/p\u003e \u003ch2\u003eAll-in-one RFID solution\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eIntegrated antenna and RC522 IC in a single compact package that eliminates the need for external coils or RF tuning\u003c\/li\u003e \u003cli\u003eSPI interface for straightforward integration with Arduino and other microcontrollers\u003c\/li\u003e \u003cli\u003eISO\/IEC 14443A compatibility supports a wide range of cards and tags\u003c\/li\u003e \u003cli\u003eCost-effective, beginner-friendly solution ideal for rapid prototyping and education\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eThe module operates at 13.56 MHz and communicates with a host microcontroller over SPI. It can detect and read data from compatible cards within a few centimeters, depending on card type and orientation. When wiring this module to an Arduino (or similar MCU), you’ll typically connect:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eSCK to the MCU’s SPI clock\u003c\/li\u003e \u003cli\u003eMOSI to MOSI\u003c\/li\u003e \u003cli\u003eMISO to MISO\u003c\/li\u003e \u003cli\u003eSDA\/SS to a digital chip-select pin\u003c\/li\u003e \u003cli\u003eRST to a reset pin\u003c\/li\u003e \u003cli\u003eGND to ground\u003c\/li\u003e \u003cli\u003e3.3V (or 5V with proper level shifting) to power and logic\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGetting started is straightforward with the MFRC-522 library and example sketches. Install the library in your development environment, run a UID read example to confirm hardware wiring, then expand to read blocks, write simple data, or implement anti-collision when multiple tags are present.\u003c\/p\u003e \u003ch2\u003eWhy choose this module\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eAll-in-one package with an onboard antenna reduces assembly steps and the risk of miswiring common RFID coils\u003c\/li\u003e \u003cli\u003eAccessible entry point for education and experimentation, backed by abundant community code and tutorials\u003c\/li\u003e \u003cli\u003eVersatile tag support with broad ISO\/IEC 14443A card compatibility makes it suitable for diverse projects without bespoke hardware\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eHome or small-office access control prototypes — quickly verify a badge or card to unlock a door or grant entry in a project\u003c\/li\u003e \u003cli\u003eAsset tracking and inventory demos — tag items and read identifiers to monitor movement or presence\u003c\/li\u003e \u003cli\u003eInteractive installations and education kits — demonstrate wireless proximity sensing and data exchange in real time\u003c\/li\u003e \u003cli\u003eDIY attendance or check-in systems for clubs, classes, or maker spaces — lightweight, inexpensive credential handling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"IC Card","offer_id":56769899233628,"sku":"14:366#IC Card","price":0.38,"currency_code":"GBP","in_stock":true},{"title":"IC Key Blue","offer_id":56769899266396,"sku":"14:1052#IC Key Blue","price":0.44,"currency_code":"GBP","in_stock":true},{"title":"IC Key Red","offer_id":56769899299164,"sku":"14:496#IC Key Red","price":0.44,"currency_code":"GBP","in_stock":true},{"title":"RC522 Board","offer_id":56769899331932,"sku":"14:1254#RC522 Board","price":0.82,"currency_code":"GBP","in_stock":true},{"title":"RC522 Set","offer_id":56769899364700,"sku":"14:771#RC522 Set","price":0.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/Sb82d02f046c047f5a2577648f631688fy.webp?v=1771502779"},{"product_id":"f3-3mm-940nm-leds-infrared-emitter-and-ir-receiver-diodes-each-5pcs-infrared-to-tube-for-arduino","title":"F3 3MM 940nm LEDs infrared emitter and IR receiver diodes each 5pcs Infrared to tube For arduino","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the F3 3MM 940nm infrared emitter and IR receiver diodes—a concise, ready-to-build pair kit designed for Arduino projects and hands-on learning. This set includes 5 infrared emitters and 5 IR receivers, giving you a complete sensing toolkit right out of the box.\u003c\/p\u003e \u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e5 x IR emitters (diodes) tuned for 940nm light\u003c\/li\u003e \u003cli\u003e5 x IR receivers (diodes) ready to detect 940nm IR light\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy 940nm infrared matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNear-infrared light is less visible to the eye, enabling non-intrusive sensing for experiments and demonstrations.\u003c\/li\u003e \u003cli\u003eIdeal for line-following experiments, obstacle detection, and simple IR communication drills with microcontrollers.\u003c\/li\u003e \u003cli\u003eThe 940nm wavelength is widely compatible with common sensors and LED\/diode packages used in DIY robotics and education kits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey setup and prototyping considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower and current: IR LEDs generally require a current-limiting resistor when powered from a 3V source. Start with a conservative resistor value and adjust based on brightness and power usage.\u003c\/li\u003e \u003cli\u003eAlignment and distance: For reliable sensing, place emitters and receivers with a clear line-of-sight and minimal ambient IR interference; reflective surfaces can help in line-tracking setups.\u003c\/li\u003e \u003cli\u003eArduino integration: Connect emitters to digital pins through resistors and drive them in code to emit bursts for sensing tests. Connect receivers to digital or analog inputs as part of a simple IR detection loop.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases you can tackle today\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eLine-following robots: illuminate a surface with the 940nm emitters and detect contrasts with the receivers to determine the robot’s path.\u003c\/li\u003e \u003cli\u003eObstacle sensing: monitor changes in reflected IR light to sense objects entering or leaving the sensor field.\u003c\/li\u003e \u003cli\u003eDIY IR communication experiments: perform basic, point-to-point IR signaling between microcontroller boards for educational demonstrations.\u003c\/li\u003e \u003cli\u003eClassroom and workshop projects: a tangible way to teach electronics fundamentals—forward voltage, current limiting, and sensor–actuator wiring—without expensive modules.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this kit stand out for Arduino makers\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eSimple, compact set that bundles emitters and receivers in one package, accelerating prototyping and experimentation.\u003c\/li\u003e \u003cli\u003e940nm choice aligns with widely used IR sensors and practical, classroom-friendly demonstrations.\u003c\/li\u003e \u003cli\u003eDurable components designed for hobbyist use, enabling quick iterations from concept to testable prototype.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePro tips to maximize results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify polarity and wiring before powering the diodes; a small mistake can affect both emission and reception.\u003c\/li\u003e \u003cli\u003eWhen testing with Arduino, begin with a basic sketch that toggles emitters and reads the receiver state to confirm clean signal changes before integrating into larger projects.\u003c\/li\u003e \u003cli\u003eExperiment with different distances and angles to understand the sensor’s responsiveness in your environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"10SET 3MM 940nm","offer_id":56769902248284,"sku":"10SET 3MM 940nm","price":0.6,"currency_code":"GBP","in_stock":true},{"title":"1 SET 3MM 940nm","offer_id":56769902281052,"sku":"1 SET 3MM 940nm","price":0.36,"currency_code":"GBP","in_stock":true},{"title":"10PCS Receiver Diode","offer_id":56769902313820,"sku":"10PCS Receiver Diode","price":0.48,"currency_code":"GBP","in_stock":true},{"title":"10PCS Infrared Diode","offer_id":56769902346588,"sku":"10PCS Infrared Diode","price":0.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/Sb86841346cb544109c288ee49b8d770bI.webp?v=1771502784"},{"product_id":"microphone-voice-sound-sensor-detection-module-for-arduino-avr-pic-analog-digital-output-sensors-ky-038-ky-037","title":"Voice Activation Module","description":"\u003cdiv\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S20473daf5a8744a7bddc7e59e0df95ee1.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/S20473daf5a8744a7bddc7e59e0df95ee1.jpg\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sb8f31528a73e4231a769bfe0e8b0309bX.jpg\" slate-data-type=\"image\" data-src=\"https:\/\/ae01.alicdn.com\/kf\/Sb8f31528a73e4231a769bfe0e8b0309bX.jpg\"\u003e \u003ch2\u003eVoice Activation Module\u003c\/h2\u003e \u003cp\u003eUnlock voice-activated and sound-responsive control for your Arduino, AVR, or PIC projects with a compact, plug‑and‑play microphone sensor. Built around an ultra‑sensitive microphone and a ready‑to‑use amplifier, this module delivers both an analog signal (A0) for waveform analysis and a digital signal (D0) to trigger your code when sound crosses a chosen threshold. Inspired by the KY-038\/KY-037 family, it’s a practical, hands‑on way to explore sound sensing without complex software stacks.\u003c\/p\u003e \u003ch3\u003eKey features that matter in the real world\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDual outputs for flexible sensing: analog A0 for waveform insights and digital D0 for event triggering\u003c\/li\u003e \u003cli\u003eAdjustable sensitivity: trim potentiometer tailors detection for whisper quiet rooms or loud environments\u003c\/li\u003e \u003cli\u003ePlug-and-play integration: quick wiring to common microcontroller pins, compatible with 3.3V–5V logic\u003c\/li\u003e \u003cli\u003eCompact and cost‑effective: small footprint ideal for breadboards, wearables, classrooms, and simple embedded projects\u003c\/li\u003e \u003cli\u003eEducational and hobbyist friendly: a practical way to learn sound sensing, thresholds, and basic signal processing\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it works and why it matters\u003c\/h3\u003e\n\u003cp\u003eThe module houses a microphone and preamplifier that feed a simple comparator. When the sound level exceeds the tuned threshold, the digital output closes the loop and prompts your MCU to react—perfect for clap detectors, voice-activated lighting, or audible alerts. The analog output provides a raw, amplified signal you can analyze or filter to derive precise sound level metrics, enabling projects from classroom demonstrations to nuanced sound-triggered devices.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eClap- or voice-triggered lights, alarms, or musical effects in hobbyist setups\u003c\/li\u003e \u003cli\u003eEnvironmental sound level monitoring for smart home experiments\u003c\/li\u003e \u003cli\u003eInteractive installations and educational kits that illustrate signal processing basics\u003c\/li\u003e \u003cli\u003eLow-cost prototyping of voice-activated controls for embedded systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWiring and setup (quick start)\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVCC to your board’s power rail (ensure consistency with your MCU logic level)\u003c\/li\u003e \u003cli\u003eGND to ground\u003c\/li\u003e \u003cli\u003eA0 (analog output) to an analog input on your MCU\u003c\/li\u003e \u003cli\u003eD0 (digital output) to a digital input on your MCU\u003c\/li\u003e \u003cli\u003eCalibrate the sensitivity using the onboard potentiometer until the digital output reliably triggers at your desired sound level\u003c\/li\u003e \u003cli\u003eFor stable readings, consider software debouncing and, if needed, a small RC filter to smooth spikes in the analog signal\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider this module?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eStudents and educators building hands‑on electronics or sound-processing lessons\u003c\/li\u003e \u003cli\u003eHobbyists crafting voice- or clap-responsive gadgets\u003c\/li\u003e \u003cli\u003eDevelopers prototyping low‑cost sound sensing for microcontroller projects\u003c\/li\u003e \u003cli\u003eDIY researchers exploring interactive art, wearables, or classroom demos\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"KY-038","offer_id":56791662723420,"sku":"14:1052#KY-038","price":15.0,"currency_code":"GBP","in_stock":true},{"title":"KY-037","offer_id":56791662756188,"sku":"14:1254#KY-037","price":15.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S3c2243f8099f4221a23ae50a903af6b8q.webp?v=1771733899"},{"product_id":"5-10pcs-soil-moisture-hygrometer-detection-humidity-sensor-module-for-arduino-development-board-diy-robot-smart-car","title":"Soil Moisture Sensor","description":"\u003cdiv\u003e\n\u003ch2\u003eCompact Dual-Output Soil Moisture Sensor Module\u003c\/h2\u003e\n\u003cp\u003eMeet the compact, versatile soil moisture hygrometer module designed to empower Arduino projects, DIY robots, and smart irrigation systems. Powered by an LM393 comparator, this board delivers reliable readings with two output options—digital and analog—so you can implement both simple on\/off watering and nuanced moisture control across multiple zones.\u003c\/p\u003e \u003ch3\u003eKey features that set it apart\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eDual outputs for flexibility\u003c\/strong\u003e — use the digital DO signal for straightforward on\/off decisions or the analog AO output for continuous moisture readings, enabling both threshold-based irrigation and precise soil sensing within the same module.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAdjustable sensitivity\u003c\/strong\u003e — a blue potentiometer lets you tailor the moisture threshold to your soil type and plants, whether you’re in sandy loam or dense clay.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBroad voltage compatibility\u003c\/strong\u003e — operates from 3.3V to 5V, making it compatible with a wide range of microcontrollers and development boards, including popular Arduino setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, sturdy design\u003c\/strong\u003e — a small PCB (approximately 3 cm × 1.6 cm) with fixed bolt holes for quick, secure installation in pots, planter boxes, or robot chassis.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVisual indicators\u003c\/strong\u003e — red power indicator and a green digital output indicator provide quick, at-a-glance status during prototyping and testing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable sensing\u003c\/strong\u003e — LM393 comparator-based stability for dependable readings as soil moisture changes, even in fluctuating conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFlexible pack options\u003c\/strong\u003e — available in 5- or 10-piece assortments to outfit multiple planting zones or multiple project iterations without frequent reorders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAutomated irrigation for pots, raised beds, and small gardens — trigger watering only when moisture falls below your chosen threshold.\u003c\/li\u003e \u003cli\u003eArduino projects and DIY robotics where soil sensing informs decisions — for example, a smart rover that waters plants as it moves.\u003c\/li\u003e \u003cli\u003eEducational kits and STEM experiments demonstrating sensor integration, analog vs digital signals, and threshold-based control.\u003c\/li\u003e \u003cli\u003eGreenhouse or terrarium setups requiring consistent moisture management without constant monitoring.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWiring, calibration, and practical use\u003c\/h3\u003e\n\u003cp\u003eConnect the module to your microcontroller as follows: \u003cstrong\u003eVCC\u003c\/strong\u003e to 3.3V–5V, \u003cstrong\u003eGND\u003c\/strong\u003e to ground. Use the \u003cstrong\u003eDO\u003c\/strong\u003e output for a digital signal (high\/low) and the \u003cstrong\u003eAO\u003c\/strong\u003e output for an analog moisture value. Turn the blue potentiometer to set the moisture threshold for the digital output; as soil dries or wets, the DO signal will switch accordingly. Read the AO output with an ADC-capable input to capture precise moisture levels and translate those readings into watering actions in your code.\u003c\/p\u003e \u003cp\u003eTip: The compact form factor with fixed bolt holes makes installation in pots, planter boxes, or robot chassis quick and repeatable, while the built-in indicators simplify debugging during development and testing.\u003c\/p\u003e \u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S1e4b0ed1179749ef91b8f04ebcd1ec220.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S14b85c096bd54b1a883d992cee2a3343o.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sb27988fbf5dd4dee8ae358f36d118c5bU.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/S515859d0d6a14c668d992b607d568e14n.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg class=\"detail-desc-decorate-image\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sbfeb0129febf4125977eccaa5cbae763g.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"10pcs","offer_id":56791761256796,"sku":"14:29#10pcs","price":10.0,"currency_code":"GBP","in_stock":true},{"title":"5pcs","offer_id":56791761289564,"sku":"14:10#5pcs","price":5.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S1e4b0ed1179749ef91b8f04ebcd1ec220.webp?v=1771736864"},{"product_id":"5pcs-mini-micro-limit-switch-no-nc-3p-terminals-spdt-5a-125v-250v-roller-arc-lever-snap-action-push-micro-switches","title":"5Pcs Mini Micro Limit Switch","description":"\u003cdiv\u003e\n\u003cimg src=\"http:\/\/ae01.alicdn.com\/kf\/H1f3265b0e6d7440abc6ecda6cfe14269q.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"http:\/\/ae01.alicdn.com\/kf\/H66b559d5b7d64a9a95f588e318625324A.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"http:\/\/ae01.alicdn.com\/kf\/H0de4512b92f54fc9a79fcfd0a2c5d648Y.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"http:\/\/ae01.alicdn.com\/kf\/Ha2fcb893c775457ab968d5e5e1372c8eX.jpg?width=824\u0026amp;height=577\u0026amp;hash=1401\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"http:\/\/ae01.alicdn.com\/kf\/H405890debe00482d95ba62137342df4fn.jpg?width=800\u0026amp;height=800\u0026amp;hash=1600\" slate-data-type=\"image\"\u003e \u003cp\u003eMeet the compact powerhouse for precision switching: the 5Pcs Mini Micro Limit Switch KW12 family designed for reliability in tight spaces. These switches deliver precise end-stop sensing with versatile SPDT (1NO+1NC+1COM) or SPST configurations and a robust 5A rating at 125V or 250V—making them ideal for DIY projects, small automation rigs, and compact machinery.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eWhat’s in the pack\u003c\/strong\u003e: five micro limit switches ready to deploy across multiple projects—great for multi-axis setups, dashboards, or ready-made replacement kits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eElectrical versatility\u003c\/strong\u003e: choose SPDT (NO\/NC with a common COM) or SPST (NO or NC) to match your schematic needs; 1COM, 1NO, and 1NC wiring provide flexible wiring options.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eElectrical rating\u003c\/strong\u003e: dependable 5A capability at 125V or 250V for signal and small-power control in a wide range of machines and electronics.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, durable design\u003c\/strong\u003e: slim 20x6x10 mm body crafted from plastic with metal contacts, engineered to withstand everyday use in hobbyist builds and light industrial tasks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eActuation options for tight spaces\u003c\/strong\u003e: 16 mm, 25 mm, and 55 mm arc lever styles, plus a roller lever variant for smooth, repeatable trips in constrained interiors.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEasy mounting\u003c\/strong\u003e: two 2.35 mm holes with 9.5 mm spacing fit common chassis and panels without additional hardware.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCertifications\u003c\/strong\u003e: CQC, CCC for reliable, standards-compliant performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e: end-stop detection in compact 3D printers, mini CNC setups, and robotics projects; simple limit-switches for conveyor lines, door interlocks, and safety interlocks in small automation cells; perfect for prototype and educational kits where dependable, repeatable actuation matters.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical wiring tips\u003c\/strong\u003e: \u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eUse SPDT when you need a defined NO or NC path with COM as the common connection.\u003c\/li\u003e \u003cli\u003eKeep wiring neat and secure, and verify continuity with a multimeter during initial setup.\u003c\/li\u003e \u003cli\u003eMount the switches using the two 2.35 mm holes, spaced 9.5 mm apart, to achieve stable alignment with moving parts.\u003c\/li\u003e \u003c\/ul\u003e\n \u003cp\u003eWith this 5-piece set, you gain a flexible, reliable switching solution that adapts to diverse projects—from hobby builds to light-duty automation. Whether you’re replacing worn end-stops or equipping a new compact machine, these KW12 micro limit switches deliver consistent actuation, clear electrical signals, and straightforward integration into your control circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"NO-NC","offer_id":56791764435292,"sku":"14:771#NO-NC","price":1.35,"currency_code":"GBP","in_stock":true},{"title":"16mm Lever","offer_id":56791764468060,"sku":"14:193#16mm Lever","price":1.32,"currency_code":"GBP","in_stock":true},{"title":"2 Pins","offer_id":56791764500828,"sku":"14:173#2 Pins","price":1.31,"currency_code":"GBP","in_stock":true},{"title":"25mm Lever","offer_id":56791764533596,"sku":"14:365458#25mm Lever","price":1.33,"currency_code":"GBP","in_stock":true},{"title":"55mm Lever","offer_id":56791764566364,"sku":"14:350850#55mm Lever","price":1.48,"currency_code":"GBP","in_stock":true},{"title":"Roller Lever","offer_id":56791764599132,"sku":"14:691#Roller Lever","price":1.33,"currency_code":"GBP","in_stock":true},{"title":"Half round head","offer_id":56791764631900,"sku":"14:175#Half round head","price":1.28,"currency_code":"GBP","in_stock":true},{"title":"Arc Lever","offer_id":56791764664668,"sku":"14:200002130#Arc Lever","price":1.37,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/H1c6e599fced742239cb564867d13ac41p.webp?v=1771736869"},{"product_id":"20pcs-high-sensitive-vibration-spring-switch-sw-18015p-sensor-switch","title":"20PCS Highly Sensitive Vibration Spring Switch","description":"\u003cdiv\u003e\n\u003cimg border=\"0\" src=\"https:\/\/ae01.alicdn.com\/kf\/Sd0c82c7d8f00437c97d88016fc4f765e0.jpg\" usemap=\"#uqKTXLUXLGk7JzPojjQVQvb91L8Au0bI\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sa6c66e8777ed487fbd9ab0638e7a5ce1I.gif\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4879c449592a482d9664d94cb69368acZ.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S4d2c70da210746d28b5b7041a3db9f6cF.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S3fec721f1ba5400ab254a30c8a93f289E.jpg\" slate-data-type=\"image\"\u003e \u003ch2\u003e20PCS Highly Sensitive Vibration Spring Switch\u003c\/h2\u003e \u003cp\u003eMeet the 20PCS High Sensitive Vibration Spring Switch SW-18015P Sensor Switch — a compact, repeatable vibration detector designed to bring smart, tactile responses to your electronics projects. This bulk pack delivers dependable, copper-spring switches that convert motion into clean, momentary electrical signals, ideal for alarms, microcontroller projects, and interactive gadgets.\u003c\/p\u003e \u003ch3\u003eWhat it does\u003c\/h3\u003e\n\u003cp\u003eThe SW-18015P is a resilient, spring-based vibration sensor switch that closes its contact when subjected to motion or impact. It’s a simple, reliable way to trigger a microcontroller, alarm, or logging circuit whenever vibration occurs. With a current rating up to 3A, this switch handles a broad range of low- to medium-load signaling tasks while staying easy to wire and implement in compact circuits.\u003c\/p\u003e \u003ch3\u003eWhat’s included and why it matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e20 high-sensitivity vibration switches per pack for quick prototyping and bulk builds\u003c\/li\u003e \u003cli\u003ePure copper contact material for durable, consistent switching\u003c\/li\u003e \u003cli\u003eRoHS and CE certified components for safe, compliant electronics projects\u003c\/li\u003e \u003cli\u003eModel SW18015P with a simple two-terminal interface — plug-and-play integration\u003c\/li\u003e \u003cli\u003eCompact, robust form factor that fits neatly into enclosures and compact PCBs\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUltra-responsive to vibrations, taps, and shocks, enabling reliable trigger events in security, automation, and interactive devices\u003c\/li\u003e \u003cli\u003eSolid copper spring contacts deliver fast, repeatable actuation with low contact resistance\u003c\/li\u003e \u003cli\u003eHeavy-duty enough to handle loads up to 3A, making it suitable for signaling relays, indicators, and small controllers\u003c\/li\u003e \u003cli\u003eNon-smart, passive device that’s easy to integrate with Arduino, ESP32, Raspberry Pi, and other MCU platforms\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it works\u003c\/h3\u003e\n\u003cp\u003eInside each unit, a spring-loaded contact closes the circuit when the device experiences vibration or a physical jolt. When the motion subsides, the contact opens again, producing a clean, momentary signal. This simplicity makes it ideal for detecting door knocks, instrument taps, vibration-triggered alarms, or event logging without needing power to the sensor itself.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVibration-activated alarms for doors, windows, or mailers\u003c\/li\u003e \u003cli\u003eMotion sensing for DIY security projects and counter-tie-down alerts\u003c\/li\u003e \u003cli\u003eInteractive art installations or toy projects that respond to movement\u003c\/li\u003e \u003cli\u003ePackage handling sensors to detect drops or impacts during transit\u003c\/li\u003e \u003cli\u003eAudible or visual signaling when a device experiences a shock or vibration\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWiring and practical integration tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConnect the two leads in series with your load or to a microcontroller input with a pull-up or pull-down resistor, depending on your preferred logic level\u003c\/li\u003e \u003cli\u003eUse a debouncing strategy or software filter to avoid false triggers from minor vibrations\u003c\/li\u003e \u003cli\u003eFor loads exceeding a few tens of milliamps, drive a transistor or MOSFET rather than wiring loads directly through the switch\u003c\/li\u003e \u003cli\u003ePlace the sensor away from strong mechanical stress sources to minimize wear and ensure long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"Default Title","offer_id":56791774036316,"sku":"\u003cnone\u003e","price":4.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S4d2c70da210746d28b5b7041a3db9f6cF.webp?v=1771736870"},{"product_id":"hc-sr501-adjust-ir-pyroelectric-infrared-pir-motion-sensor-detector-module-for-arduino","title":"HC-SR501 Adjust IR Pyroelectric Infrared PIR Motion Sensor Detector Module For Arduino","description":"\u003cdiv\u003e\n\u003ch2\u003eHC-SR501 Adjustable PIR Motion Sensor Module for Arduino\u003c\/h2\u003e\n\u003cp\u003eMeet a compact, versatile infrared motion detector designed for Arduino projects and battery-powered setups. The HC-SR501 uses pyroelectric sensing to reliably detect movement within a wide input voltage range, delivering a clean high-level signal for easy integration with microcontrollers and circuits. Three included visuals help illustrate its compact form and mounting options.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sfb56b9bc38b34db48b03200d405aef3bp.png\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd3f77a2f65a04011a028314e470bc9d2y.png\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sddbc9e9cd2984d5c8d6564dda84c6a475.png\" slate-data-type=\"image\"\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eWorking voltage: DC5V–20V\u003c\/li\u003e \u003cli\u003eStatic power consumption: 65\u003c\/li\u003e \u003cli\u003eOutput level: High 3.3V, Low 0V\u003c\/li\u003e \u003cli\u003eDelay time: Adjustable (0.3 s ~ 18 s)\u003c\/li\u003e \u003cli\u003eEmbargo time: 0.2 seconds\u003c\/li\u003e \u003cli\u003eTrigger mode: L (not repeatable) or H (repeatable); default value is H\u003c\/li\u003e \u003cli\u003eInduction range: less than 120° cone angle, up to 7 meters\u003c\/li\u003e \u003cli\u003eWorking temperature: -15 ~ +70\u003c\/li\u003e \u003cli\u003ePCB dimensions: 32 × 24 mm; screw holes 28 mm apart; screw diameter 2 mm; lens diameter 23 mm\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFeatures and behavior\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAutomatic operation: detects entry within sensing range (outputs high); upon leaving, a delay closes the high signal and returns to low\u003c\/li\u003e \u003cli\u003eLight control (optional): you can enable light-dependent operation; factory comes without a photoresistor installed. To use daylight restraint, purchase and install the photoresistor\u003c\/li\u003e \u003cli\u003eTwo trigger modes: L (not repeatable) and H (repeatable); default is H\u003c\/li\u003e \u003cli\u003eNot repeatable mode: after the sensor outputs high, the delay expires and the output returns to low\u003c\/li\u003e \u003cli\u003eRepeatable mode: output remains high during repeated detections within the delay; the timer resets with each motion event until the area is clear\u003c\/li\u003e \u003cli\u003eInduction blackout time: default 0.2 seconds after each induction, during which no signal is received\u003c\/li\u003e \u003cli\u003eWide operating voltage range: DC5V–20V for flexible integration\u003c\/li\u003e \u003cli\u003ePower consumption: quiescent current 65\u003c\/li\u003e \u003cli\u003eHigh-level signal output: easily interfaced with your circuit\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003ePerfect for Arduino-based security or automation projects: motion-activated lighting, alarm triggers, or energy-saving sensors in compact enclosures. Its low standby current makes it suitable for battery-powered prototypes and portable devices, while the adjustable delay and dual trigger modes give you precise control over how the sensor responds to movement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"HC-SR501 Bracket","offer_id":58065764843868,"sku":"14:10#HC-SR501 Bracket","price":1.5,"currency_code":"GBP","in_stock":true},{"title":"HC-SR501 Green","offer_id":58065764876636,"sku":"14:175#HC-SR501 Green","price":2.0,"currency_code":"GBP","in_stock":true},{"title":"HC-SR501 Blue","offer_id":58065764909404,"sku":"14:173#HC-SR501 Blue","price":2.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S28085cbf5a9249f182da1658623be9e75.webp?v=1781287900"},{"product_id":"1-5pcs-a4988-driver-board-3d-printer-accessories-ramps-1-4-a4988-stepper-motor-driver-with-heat-sink-for-3d-printer-parts","title":"1\/5pcs A4988 Driver Board 3D Printer Accessories Ramps 1.4 A4988 Stepper Motor Driver with Heat Sink for 3D Printer Parts","description":"\u003cdiv\u003e\n\u003ch2\u003eA4988 StepStick Driver Module – 5-Pack with Heat Sinks for 3D Printers\u003c\/h2\u003e\n\u003cp\u003ePower your 3D printer, CNC, or engraving project with this set of A4988 StepStick stepper motor driver modules. Each compact board delivers precise microstepping and robust protection, designed to keep your motors running smoothly and reliably.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMicrostepping versatility\u003c\/strong\u003e: supports Full, 1\/2, 1\/4, 1\/8, and 1\/16-step subdivision for smooth, quiet motion and fine-tuned control.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust drive capability\u003c\/strong\u003e: Up to 35V and +\/- 2A output per channel, suitable for common hobbyist stepper motors used in 3D printers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLogic compatibility\u003c\/strong\u003e: Works with 3.3V or 5V logic signals, making it compatible with a wide range of controller boards and Arduino-based setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProtective features\u003c\/strong\u003e: Built-in crossover-current protection, overheat shutdown, ground short-circuit protection, load short-circuit protection, and UVLO for reliable operation and motor safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficient operation\u003c\/strong\u003e: Low RDS(on) output, automatic current decay mode testing\/select, mixed slow decay mode, and synchronous rectification to minimize power loss and heat.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWhat’s included\u003c\/strong\u003e: Package contains 5 A4988 StepStick Stepper Motor Driver Modules and 5 heatsinks for immediate cooling when mounted on compatible boards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications\u003c\/strong\u003e: Ideal for building 3D printers, CNC machines, engraving setups, and other essential motor-driven modules. Compatible with Arduino-based code and direct-drive motors; commonly used with printers similar to Prusa Mendel, Ultimaker, PrintBot, and MakerBot ecosystems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOrigin and condition\u003c\/strong\u003e: Brand: AOKIN. Condition: New. Origin: Mainland China.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Sd4763f884b294a81b13c3c954c8249dbU.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S5141b2c5ec3043e19eb0e48414722120Y.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S3c54484ef7594bf2a3e31e6abc792332s.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/Se6cb4559655b4573a612aaff3770a5d0m.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg src=\"https:\/\/ae01.alicdn.com\/kf\/S222dc54311e84d9db7c849a5aa112514p.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"5pcs","offer_id":58065765073244,"sku":"14:1254#5pcs","price":8.0,"currency_code":"GBP","in_stock":true},{"title":"1pc","offer_id":58065765106012,"sku":"14:771#1pc","price":3.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/Sd4763f884b294a81b13c3c954c8249dbU.webp?v=1781287902"},{"product_id":"digital-temperature-sensor-humidity-sensor-am2302-dht22-sensor-module-for-arduino-electronic-diy","title":"Digital Temperature Sensor \/ Humidity Sensor AM2302 DHT22  Sensor Module For Arduino electronic DIY","description":"\u003cdiv\u003e\n\u003cp\u003eThe AM2302 DHT22 Digital Temperature and Humidity Sensor Module is a compact, calibrated unit designed for Arduino and electronic DIY projects, delivering reliable digital readings for both temperature and humidity.\u003c\/p\u003e \u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe AM2302 Humidity Capacitance Digital Temperature and Humidity Module combines a capacitive humidity sensor with a precise temperature element and an onboard microcontroller. It outputs a calibrated digital signal, enabling fast, interference-resistant readings for Arduino and other microcontroller projects. A dedicated digital acquisition pathway and internal calibration data provide stable long‑term performance. The 3‑pin, single‑bus interface simplifies wiring and integration, while the ultra-compact 40 × 23 mm package and light 4 g weight suit compact enclosures. With 5 V operation and a transmission range claimed up to 20 meters or more, this module is designed for demanding environments. Packaging options can be tailored to your needs.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eCalibrated humidity readings with coefficients stored in the microcontroller for precise results\u003c\/li\u003e \u003cli\u003eCapacitive humidity sensing element delivering stable, long‑term performance\u003c\/li\u003e \u003cli\u003eUltra‑low energy consumption paired with a standard digital single‑bus output for easy integration\u003c\/li\u003e \u003cli\u003eDigital bi‑directional single‑bus interface simplifies connections to microcontrollers\u003c\/li\u003e \u003cli\u003eUltra‑fast response with strong anti‑interference characteristics\u003c\/li\u003e \u003cli\u003eCompact form factor (40 × 23 mm) and lightweight (≈4 g) with 5 V operation\u003c\/li\u003e \u003cli\u003eSignal transmission distance up to 20 meters or more\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eSize: 40 × 23 mm\u003c\/li\u003e \u003cli\u003eWeight: ≈ 4 g\u003c\/li\u003e \u003cli\u003eVoltage: 5 V\u003c\/li\u003e \u003cli\u003eOutput: Digital bi‑directional single‑bus\u003c\/li\u003e \u003cli\u003eTemperature range: −40 to 80 °C, ±0.5 °C\u003c\/li\u003e \u003cli\u003eHumidity range: 20–90% RH, ±2% RH\u003c\/li\u003e \u003cli\u003ePorts: 3‑pin single‑bus interface\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eHVAC systems\u003c\/li\u003e \u003cli\u003eHumidifiers\u003c\/li\u003e \u003cli\u003eTest and inspection equipment\u003c\/li\u003e \u003cli\u003eConsumer goods\u003c\/li\u003e \u003cli\u003eAutomobiles\u003c\/li\u003e \u003cli\u003eAutomatic control\u003c\/li\u003e \u003cli\u003eData loggers\u003c\/li\u003e \u003cli\u003eHousehold appliances\u003c\/li\u003e \u003cli\u003eHumidity regulators\u003c\/li\u003e \u003cli\u003eMedical devices\u003c\/li\u003e \u003cli\u003eWeather stations\u003c\/li\u003e \u003cli\u003eOther related humidity detection controls\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSpecial packaging can be provided according to user needs.\u003c\/p\u003e \u003ch3\u003eGallery\u003c\/h3\u003e\n\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S1841696a9a594f12be1a9bae6b0bade1L.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S97a3dc6399e8421f9353328c1d08317dz.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/Se83bf65eb8724039bf6781cba11980e6M.jpg\" slate-data-type=\"image\"\u003e\n\u003cimg style=\"width:800px\" width=\"800px\" src=\"https:\/\/ae01.alicdn.com\/kf\/S0287ab8dc935447abd29f2f1843f60ca9.jpg\" slate-data-type=\"image\"\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"Default Title","offer_id":58065765335388,"sku":"\u003cnone\u003e","price":2.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/S1450081ecaf74c079947c820c5576cb24.webp?v=1781287902"}],"url":"https:\/\/robotbuilder.co\/collections\/sensors.oembed","provider":"Electronics","version":"1.0","type":"link"}