The mechanical endstop is a simple solution to a simple problem. We want to be able to detect when an X/Y/Z stage has reached its minimum or maximum. Instead of messing with flags or complicated light beam interruption, we use a mechanical switch.

If we place the switch in the path of the stage, then the stage itself will simply close the switch when it moves against it. Other than properly positioning the switch, we do not need to modify the stage at all. If you’re worried about reliability, you can sleep well at night. The switches we use are rated for 1 million operations before failure. Since we only use the switches once per print, that means you’ll be able to do one million prints before having to replace the switch

Connection description:

Redline: connecting VCC (ramps of +)

Black line: connecting GND (ramps of -)

Green Line: connecting SIGNAL (ramps in s) 

Features :

Mechanical Endstop kit is for 3D Printers or CNC machines

Supported by RepRap electronics, RAMPS 1.4 and by other popular RepRap boards.

Can resist upto 2A current and 300V voltage.

An insulating layer upto 80 degrees.

Convenient for plug. Ease to use.

With one side integrated plug.

An insulating layer over a wide range of temperatures, up to 80 degrees.