The KY-025 Reed Switch Module is a small electrical switch operated by an applied magnetic field, commonly used as proximity sensor.
The module has both digital and analog outputs. A trimmer is used to calibrate the sensitivity of the sensor.
This module consist of a 2x14mm normally open reed switch an LM393 dual differential comparator, a 3296W-104 trimmer pontetiometer, 6 resistors, 2 LEDs and 4 male header pins.
