LJ12A3-4-Z/BX Proximity Sensor- 4mm - M12

An inductive proximity sensor that can be used for 3D printers and CNC machines, among others. 

It detects metal objects within a distance of 4mm from the sensor. 

Specifications:

• Voltage: DC 6-36V
• Current: max 300mA
• Detection distance: 4mm
• Polarity: NPN (open by default: voltage is cut off as soon as a metal object is within 4mm)
• Size: M12x10x55mm
• Cable length: 1 meter

Connections:

• Brown: Input voltage/+
• Blue: GND/Ground/-
• Black: Output

Note: Only works with metals, not with glass or plastic, for example.