eBay - 5 Sets Door Window Contact Magnetic Reed Sensor Switch
$7.90
in stock
eBay
as of January 27, 2025 11:57 am
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The magnetic reed switch is a useful module to use on your door, window, or drawer, to detect if it is closed or opened.
Learn how to use the magnetic reed switch with the Arduino: Monitor Your Door Using Magnetic Reed Switch and Arduino.
Create a notification system with the ESP32 or ESP8266 and a reed switch to monitor your doors and windows: