This mechanical end stop has the microswitch pre-mounted on the printed circuit board and features a 3-pin Molex header and a 3-pin Dupont header for easy attachment to your 3D printer or CNC machine. This end stop is also equipped with a blue LED that lights up when the microswitch is activated. The endstop is suitable for 3V and 5V control, which means that it can be used with various controller boards.