The M12 NPN Normally Closed Inductive Proximity Sensor is used for non-contact metal detection, commonly for limit sensing and homing on CNC machines, 3D printers, and automation equipment. This sensor activates when it is within 4mm of a metal surface, providing reliable and repeatable switching without mechanical wear.

The 3-wire design makes it easy to connect to most CNC controllers and motion control systems that support NPN NC inputs. Durable threaded metal housing allows secure mounting and precise adjustment.

Includes: 1× M12 NPN NC Proximity Sensor

Specifications:

• Output Type: NPN Normally Closed (NC)

• Operating Voltage: 6–36V DC

• Diameter: M12 (12mm)

• Thread Length: 60mm

• Detection Distance: 4mm

• Wiring: 3-Wire (Brown = +V, Blue = GND, Black = Signal)

• Application: CNC Limit Switch / Homing Sensor