Features:

It is using an imported groove optical coupling sensor and its width is 5mm.

It has an output in state light. If the output is on a high level, the light is off.

If the output is at a low level then the light is ON.

The output will be at a high level if it will be covered. And otherwise, its output level will low.

It has a good signal and waveform. It has a strong driving ability for more than 15mA.

It works on 3.3V to 5V.

It has a digital switch output of 0 and 1.

It is equipped with a fixed bolt hole and it is easily installed.

Its PCB size is 3.2cm x 1.4cm.

We can use LM393 wide voltage comparer.