{"product_id":"reed-switch-module-magnetic-contact-sensor-digital-arduino","title":"Reed Switch Module — Magnetic Contact Sensor, Digital Output, Arduino Compatible","description":"\u003ch2\u003eReed Switch Module — Magnetic Contact Sensor, Digital Output, Arduino Compatible\u003c\/h2\u003e\n\n\u003cp\u003eThis \u003cstrong\u003ereed switch module\u003c\/strong\u003e uses a magnetically-actuated reed switch to detect the presence of a magnet without any physical contact. When a magnet is brought within range, the reed switch closes and the module outputs a digital signal. Unlike mechanical switches, reed switches have no moving parts exposed to the environment, making them ideal for sealed enclosures, door\/window detection, and liquid level sensing. The module includes a PCB with pull-up resistor and 3-pin header for direct Arduino connection.\u003c\/p\u003e\n\n\u003ch3\u003eModule Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSensor Type:\u003c\/strong\u003e Reed switch (magnetically actuated)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e Digital (HIGH when no magnet, LOW when magnet present)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Voltage:\u003c\/strong\u003e 3.3V – 5V DC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConnector:\u003c\/strong\u003e 3-pin male header (GND, VCC, Signal)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eActuation:\u003c\/strong\u003e Magnetic field (no physical contact required)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eReed Switch vs Hall Effect Sensor\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReed switch:\u003c\/strong\u003e Mechanical contacts, simple digital output, lower cost — for basic presence detection\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHall effect sensor:\u003c\/strong\u003e Solid-state, can detect polarity and field strength — for precise position and speed sensing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDoor \/ window sensor:\u003c\/strong\u003e Detect open\/closed state of doors and windows for security systems\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLiquid level detection:\u003c\/strong\u003e Float-mounted magnet triggers reed switch at set liquid level\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProximity detection:\u003c\/strong\u003e Detect presence of magnetic objects without contact\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRotation counting:\u003c\/strong\u003e Count rotations of a shaft with a magnet attached\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTamper detection:\u003c\/strong\u003e Detect opening of enclosures in security applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Reed switch module with 3-pin header\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNon-contact magnetic detection — reed switch module with digital output for door\/window sensing, liquid level detection, and proximity sensing in Arduino projects.\u003c\/p\u003e","brand":"Keszoox","offers":[{"title":"Default Title","offer_id":45681334223083,"sku":"","price":7.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/Reed-Switch-Module-2.jpg?v=1723006018","url":"https:\/\/keszoox.com\/products\/reed-switch-module-magnetic-contact-sensor-digital-arduino","provider":"Keszoox","version":"1.0","type":"link"}