Magnetic Switch Round Type

This magnetic door lock sensor is easy to use. A magnet and a magnetic sensor are included (the one with two wires). The sensor contains a simple reed switch that is triggered when a magnet is present. Install the magnet on the door/window and the magnet sensor on the door/window frame to use the sensor as a door/window lock sensor. This sensor is ideal for door lock sensors, drawer lock sensors, Window Lock Sensors, encoders, and other general magnet sensing applications. It has mounting tabs and holes on the back for mounting to a flat surface. The sensor also includes double-sided tape for adhering it to a flat surface. This sensor comes with 4 screws.