If you want limit switches on your CNC Machine, this is one of the easiest solutions. They simply plug and play into the xPro 4 Controller and other controllers, and have built in noise filtering. These endstops come with pre-made 2m cables, choose from either a straight endstop or right-angled.
Holes are ready to accept M3 Bolts and are spaced at 20mm for easy mounting to V-Slot Extrusion.
These endstops are configured as follows: Signal to 5V when triggered, and Signal to Ground when not triggered.