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 end stop is suitable for 3V and 5V control, which means that it can be used with various controller boards.