3 Pack Optical Limit Switches Endstop with Comparison Circuit LM393 70cm Line IR Counter Module

I used these to replace the microswitch endstops in my printer. Having the LED on the endstop module makes setting the endstop trigger point very easy. Be careful if using with Duet- the signal and VCC leads are swapped compared to the the terminals on the endstop module- you'll have to swap the wires in the connector at the controller board end of the cable.These are active high endstops, so make sure your config file is set correctly.

Decent! Works fine for the price

Only one of the three Optical Limit Switches worked. Other two were defective.

Pretty good device. Don’t remember if it said anything about being normally open or normally closed, but my printer worked on normally closed and the device was opposite. Simple fix. Other than that, it is sturdy, great signal strength, and still going strong.

I like the fact that it has an indicator and a circuit that changes the state of the output. I used these for my 3D printer in place of the mechanical switch

Very easy to use and ideal for filament sensor on my 3D printer. Works great with my Titan Aero direct drive extruder and Volcano hot end.

Very nice item, works like it should. Just need to make sure you have 5v regulator in serious if using it with higher voltage...

These limit switches worked perfecly for the encoder I was making. They are well made and easy to connect.