{"product_id":"reed-switch-sensor-normally-open-magnetic-switch-cdn-0717","title":"Reed Switch Sensor - Normally Open Magnetic Switch CDN-0717","description":"\u003ch1\u003eReed Switch Sensor – Normally Open Magnetic Contact Switch (CDN-0717)\u003c\/h1\u003e\n\u003cp\u003eThe Reed Switch Sensor (SKU: CDN-0717) is a magnetically actuated switch enclosed in a durable glass capsule. It closes its electrical contacts when exposed to a magnetic field, enabling non-contact switching for countless applications. Its simple, maintenance-free design makes it a staple in security systems, industrial sensors, and DIY electronics.\u003c\/p\u003e\n\u003ch2\u003eKey Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Type\u003c\/td\u003e\n\u003ctd\u003eNormally Open (NO)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003e10W max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Voltage\u003c\/td\u003e\n\u003ctd\u003e200V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Switching Current\u003c\/td\u003e\n\u003ctd\u003e0.5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to 125°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass Length\u003c\/td\u003e\n\u003ctd\u003e14mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-home-security-motion-sensor-kit-with-esp32\"\u003eDoor or window open\/close sensor for home security\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eMagnetic proximity detector for robotics\u003c\/li\u003e\n\u003cli\u003eCounting mechanism for rotating objects with magnet attachment\u003c\/li\u003e\n\u003cli\u003eLiquid level sensor using a floating magnet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eCompatibility\u003c\/h2\u003e\n\u003cp\u003eThis reed switch integrates easily with any microcontroller or digital logic circuit. It behaves like a standard push button: open when idle, closed when a magnet is near. Commonly used with Arduino Uno, ESP32, Raspberry Pi GPIO, and 555 timer circuits for sensing tasks. Simply configure a digital pin with an internal pull-up resistor or add an external 10kΩ resistor to read its state. No additional power or complex circuitry is required.\u003c\/p\u003e\n\u003ch2\u003eWiring Notes\u003c\/h2\u003e\n\u003cp\u003eConnect one lead of the reed switch to ground and the other to a digital input pin with a pull-up resistor to VCC. When a magnet is brought near, the switch closes, pulling the pin LOW. Ensure the current through the switch does not exceed 0.5A; for higher loads, use a relay or transistor.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\n\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\n\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, it works like a regular switch. Connect between ground and a digital pin with internal pull-up enabled for easy reading.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eWhat magnet strength is needed?\u003c\/summary\u003e\u003cp\u003eA small neodymium magnet (e.g., N35) placed within 10-15mm will reliably activate the switch. Larger gaps may need stronger magnets.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan it switch AC loads?\u003c\/summary\u003e\u003cp\u003eThe reed switch is rated for DC up to 200V, but for AC mains switching, use a relay driven by this sensor instead.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445017665901,"sku":"CDN-0717","price":20.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_de150648-d2ec-467a-9c6e-92de608e1e56.jpg?v=1781512847","url":"https:\/\/compoden.com\/products\/reed-switch-sensor-normally-open-magnetic-switch-cdn-0717","provider":"Compoden","version":"1.0","type":"link"}