4-pin definition VCC power supply positive, GND power negative, DO digital output, AO invalid
Widely used in motor speed detection, pulse counting, position limit and so on.
1, the use of groove coupler sensor
2, the groove width of 5mm.
3, output status indicator, output high lamp, output low lights.
4, block, the output high; no shelter, output low.
5, the comparator output signals clean, good waveform, driving ability, than 15mA.
6, the working voltage of 3.3V-5V
7, the output format: Digital switching output?0 and 1?
8, a fixed bolt hole for easy installation
9, small PCB board size: 3.2cm x 1.4cm
10, using a wide voltage comparator LM393
1. module slots unobstructed, receiver tube is turned on, the module DO output low, when blocked, DO output high;
2. DO module can be connected to the relay, consisting of limit switches and other functions, it can also be connected with the active buzzer module, consisting of alarm.
A speed sensor module
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