Module Features:
Use imported groove coupler sensor
Groove Width: 5mm
Output state indicator lights
Obscured output high; unobstructed output low
The comparator output, the signal is clean, the waveform, driving ability, more than 15mA
Operating Voltage: 3.3V-5V
The output in the form: Digital switching outputs (0 and 1)
A fixed bolt hole for easy installation
Small plates PCB Dimensions: 3.2 x 1.4cm / 1.25 * 0.55"
Using a wide voltage LM393 comparator
Module Using The Instructions:
Module slot unobstructed, receiver tube conduction module DO output low, shelter, DO output high
Module DO connected to the relay, composed of the limit switch functions can also be connected to the active buzzer module, composed of the alarm

Package Include: