{"product_id":"ky-003-hall-effect-magnetic-sensor-module-arduino-20pack","title":"KY-003 Hall Effect Magnetic Sensor Module — High Sensitivity, 4.5–24V, Arduino (20-Pack)","description":"\u003ch2\u003eKY-003 Hall Effect Magnetic Sensor Module — High Sensitivity, 4.5–24V (20-Pack)\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eKY-003 Hall effect sensor module\u003c\/strong\u003e detects the presence of a magnetic field without physical contact. When a magnet approaches the sensor, the digital output switches state — enabling non-contact position detection, speed measurement, and proximity switching. Built-in temperature compensation maintains consistent performance from -40°C to 150°C. Pack of 20 for multi-sensor projects or prototyping stock.\u003c\/p\u003e\n\n\u003ch3\u003eElectrical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Unipolar Hall effect switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 4.5V – 24V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Current:\u003c\/strong\u003e 25mA (max 50mA)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput Type:\u003c\/strong\u003e Digital (HIGH\/LOW)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Frequency:\u003c\/strong\u003e DC – 100kHz\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -40°C to +150°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModule Size:\u003c\/strong\u003e 18.5 × 14.6mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePack Quantity:\u003c\/strong\u003e 20 modules\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHall Effect vs Reed Switch\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHall effect (this module):\u003c\/strong\u003e Solid-state, no moving parts, fast response (DC–100kHz), vibration-resistant, works with any magnet orientation\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReed switch:\u003c\/strong\u003e Mechanical contacts, slower response, sensitive to vibration, lower cost\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eArduino Wiring\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVCC → 5V | GND → GND | OUT → Arduino digital input pin\u003c\/li\u003e\n  \u003cli\u003eOutput goes LOW when magnet is present (active LOW)\u003c\/li\u003e\n  \u003cli\u003eUse \u003ccode\u003edigitalRead()\u003c\/code\u003e to detect magnet presence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNon-contact switch:\u003c\/strong\u003e Detect magnet position without physical contact\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeed measurement:\u003c\/strong\u003e Count magnet passes on rotating shaft (RPM sensor)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAutomotive ignition:\u003c\/strong\u003e Crankshaft position detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSafety alarm:\u003c\/strong\u003e Door\/window open detection with magnet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrushless motor commutation:\u003c\/strong\u003e Rotor position sensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eKY-003 Hall effect sensor module, 20-pack — unipolar, 4.5–24V, temperature-compensated for Arduino non-contact switching, speed detection, and position sensing.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"China Mainland","offer_id":47798427681003,"sku":"200007763:201336100","price":58.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Scc946e1324504c84a79bc66a74d23a44N.webp?v=1770564824","url":"https:\/\/keszoox.com\/products\/ky-003-hall-effect-magnetic-sensor-module-arduino-20pack","provider":"Keszoox","version":"1.0","type":"link"}