Generic M12 Inductive Proximity Sensor 4mm NPN-NO DC6–36V - 1.1m Cable

This three-wire sensor uses brown for DC+ (6-36V), blue for DC- (ground), and black for the NPN output signal. The black wire acts as an open-collector sink; it pulls to ground (blue) when a metal target is detected within 4mm. Always connect a pull-up resistor to your controller's logic voltage if reading the signal with a microcontroller.

Yes, inductive proximity sensors detect all conductive metals, but the sensing distance is reduced for non-ferrous materials. For aluminum, expect an effective range of approximately 60-70% of the nominal 4mm ferrous distance. For precise positioning, perform an in-situ calibration with your specific target material.

Yes, this is a shielded (flush-mountable) inductive sensor. Its design allows installation flush with a metal bracket or panel without affecting its sensing field or causing false triggers from the surrounding metal, making it ideal for compact machine designs.

While not explicitly stated in the provided specs, standard M12 inductive sensors of this type typically achieve switching frequencies up to 1 kHz. This allows for high-speed counting and positioning applications in automated machinery.

Yes, the wide 6-36V DC range makes it directly compatible with common 24V industrial PLC inputs. For 5V Arduino interfaces, you must use the NPN output with an external pull-up resistor to 5V and ensure the sensor's power supply is within its 6-36V range (e.g., a separate 12V source).