Infrared speed sensor module
Using imported groove optical coupling sensor, width 5mm.
It has the output state light, if the output is high level, the lights are off. if the output is low level, it is on.
The working voltage of 3.3V to 5V.
Output: digital switch output (0 and 1).
Equipped with a fixed bolt hole, easily install.
Small board PCB size: 3.2 cm x 1.4 cm.
Use the LM393 wide voltage comparer.