INDUCTIVE PROXIMITY SENSOR DETECTION SWITCH

Description

The Whadda inductive proximity sensor detection switch accurately detects metal objects that are within 4 mm of the sensor head. When a metal object is detected, the built-in red LED lights up and the black signal wire is internally shorted to ground through an NPN transistor. When no object is detected, the signal is floating/high impedance.

Note: It is recommended to supply the sensor with no more than 6 V, and to put a series protection resistor between the signal output of the sensor and digital input of your board when connected to 5 V logic, such as Arduino® compatible boards.

Features

• detects metal objects within 4 mm of the sensor head
• metal detected:
  • built-in red LED lights up
  • the black signal wire is internally shorted to ground through an NPN transistor
• no metal detected:
  • signal is floating/high impedance
• easy connection

Specifications

• supply voltage: 6 – 36 V DC
• sensor model: LJ12A3-4-Z / BX
• detection distance: 4 mm
• output signal: NPN (high impedance when no object is present, or ground when object is detected)
• cable length: ± 110 cm
• weight: 44 g