2 channel speed sensor module motor speed counting module groove coupler module

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Purpose:
Widely used in motor speed detection, pulse counting, position limits, etc., with two-way test.
Module Features:
1, the use of imported groove coupler sensor
2, the groove width 5mm.
3, the output status indicator lamp output high, output low lights.
4, block, output low; no shelter, output high.
5, the comparator output signal clean, good waveform, driving ability, more than 15mA.
6, the working voltage of 3.3V-5V
7, the output format: digital switching outputs (0 and 1)
8, a fixing bolt holes for easy installation
9, small plates PCB Size: 3.2cm x 1.7cm
10, using a wide voltage comparator LM393
Module for use:
1. module slot unobstructed, the reception is turned on, the module DO output low, when blocked, DO output high;
2. DO module can be connected with the relay, consisting of limit switches and other functions, it can also be connected with the active buzzer module, consisting of alarm.