{"product_id":"a3144-hall-effect-sensor-magnetic-switch-module-ky-003","title":"A3144 Hall Effect Sensor Magnetic Switch Module KY-003","description":"\u003ch2\u003eA3144 Hall Effect Sensor Magnetic Switch Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eA3144 Hall Effect Sensor Magnetic Switch Module\u003c\/strong\u003e is a compact, reliable electronic component designed for detecting magnetic fields with precision. Compatible with the popular \u003cstrong\u003eKY-003\u003c\/strong\u003e form factor, this module is an ideal replacement or expansion piece for Arduino, Raspberry Pi, and other microcontroller-based projects. Whether you're building a speed sensor, proximity detector, or position encoder, this module delivers consistent, dependable output.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity Detection:\u003c\/strong\u003e Built around the A3144 Hall-effect IC for accurate and stable magnetic field sensing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKY-003 Compatible:\u003c\/strong\u003e Drop-in replacement or add-on for existing KY-003 Hall sensor setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSMD Construction:\u003c\/strong\u003e Surface-mount design for a compact footprint and reliable solder joints.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works seamlessly with Arduino, Raspberry Pi, ESP32, STM32, and other common development platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlexible Quantity Options:\u003c\/strong\u003e Available in packs of 1, 5, 10, or 20 — order exactly what your project needs.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Integration:\u003c\/strong\u003e Simple 3-pin interface (VCC, GND, Signal) for quick wiring and setup.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable \u0026amp; Reliable:\u003c\/strong\u003e Designed for long-term use in both prototyping and finished builds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor IC:\u003c\/strong\u003e A3144 Hall Effect\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Magnetic Switch \/ Digital Output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Format:\u003c\/strong\u003e KY-003\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e SMD (Surface Mount Device)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e Digital (High\/Low)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 4.5V – 24V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Sizes:\u003c\/strong\u003e 1 pc, 5 pcs, 10 pcs, 20 pcs\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eA3144 Hall Sensor Magnetic Switch Module(s) (SMD) — quantity as selected\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eArduino \u0026amp; Raspberry Pi DIY electronics projects\u003c\/li\u003e\n  \u003cli\u003eMagnetic proximity and position sensing\u003c\/li\u003e\n  \u003cli\u003eSpeed detection (motor RPM, wheel encoders)\u003c\/li\u003e\n  \u003cli\u003eReplacing faulty KY-003 Hall sensor modules\u003c\/li\u003e\n  \u003cli\u003eRobotics, automation, and smart home builds\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003e4\/6mm CCB Flat Round Spacer Beads DIY Jewelry Making 100-200pcs\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the A3144 Hall Effect Sensor Magnetic Switch Module do?\u003c\/h4\u003e\n\u003cp\u003eA: The A3144 Hall Effect Sensor Magnetic Switch Module detects the presence of a magnetic field and outputs a digital HIGH or LOW signal. It is commonly used in Arduino and microcontroller projects for proximity sensing, speed detection, and position encoding.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this module compatible with KY-003 Hall sensor setups?\u003c\/h4\u003e\n\u003cp\u003eA: Yes — this module is a direct KY-003 compatible replacement. It uses the same 3-pin interface (VCC, GND, Signal), making it easy to swap into existing circuits or breadboard setups without any wiring changes.\u003c\/p\u003e\n\u003ch4\u003eQ: What quantity options are available for the A3144 Hall Sensor Module?\u003c\/h4\u003e\n\u003cp\u003eA: You can order this module in packs of 1, 5, 10, or 20 pieces — making it cost-effective whether you need a single replacement or a supply for multiple projects.\u003c\/p\u003e\n\u003ch4\u003eQ: What microcontroller platforms are compatible with this Hall sensor module?\u003c\/h4\u003e\n\u003cp\u003eA: The A3144 Hall Sensor Module is compatible with a wide range of platforms including Arduino (Uno, Mega, Nano), Raspberry Pi, ESP8266, ESP32, STM32, and most other development boards that support digital input signals.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the A3144 Hall Effect Sensor Magnetic Switch Module do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The A3144 Hall Effect Sensor Magnetic Switch Module detects the presence of a magnetic field and outputs a digital HIGH or LOW signal. It is commonly used in Arduino and microcontroller projects for proximity sensing, speed detection, and position encoding.\"}}, {\"@type\": \"Question\", \"name\": \"Is this module compatible with KY-003 Hall sensor setups?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes — this module is a direct KY-003 compatible replacement. 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