Slot-type Optocoupler Module Speed Measuring Sensor

Module Features:
1, use imported groove coupler sensor
2, the groove width of 5mm.
3 output status indicator, the lamp output high, output low lights.
4, obscured output high; unobstructed output low.
5, the comparator output, the signal is clean, the waveform, driving ability, more than 15mA.
6, operating voltage 3.3V-5V
7, the output in the form: Digital switching outputs (0 and 1)
8, a fixed bolt hole for easy installation
9, small plates PCB Dimensions: 3.2cm x 1.4cm
10, using a wide voltage LM393 comparator
Module using the instructions:
1 module slot unobstructed, receiver tube conduction module DO output low, shelter, DO output high;
2 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.