SPDT Micro Limit Switch Roller Lever 5A 3 pins Dim:20*6mm

The limit switch is also known as a micro switch. In CNC, 3D Printing, and Rep Rap Printers these switches are used as End Stops and to detect the max and min limits of the axis. Mechanical switches are simple to use and cheaper than optical end-stops because they do not require a circuit board and only use 2 wires to connect the switch. Pull-up and down resistors can be put close to the mainboard.