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LJ12A3-4-Z/BY Inductive Proximity Sensor Switch NO PNP

Zaitronics  |  SKU: Z0481
$7.30 AUD
$6.64 exc GST

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The LJ12A3-4-Z/BY is a high-performance inductive proximity sensor designed for detecting metal objects without physical contact. With a 4 mm sensing distance, normally open PNP output, and wide voltage compatibility, this sensor is perfect for industrial automation, robotics, and DIY electronics projects.

Key Features

  • Sensing Distance: 4 mm
  • Output Type: PNP (sourcing)
  • Switch Logic: Normally Open (NO)
  • Operating Voltage: DC 6–36 V
  • Body Diameter: 12 mm
  • Reliable metal detection without contact
  • Compact and durable design for industrial environments

Technical Specifications

  • Voltage Range: 6–36 V DC
  • Output Current: Max 200 mA
  • Sensing Distance: 4 mm
  • Detection Method: Inductive (metal objects only)
  • Switching Frequency: Up to 2 kHz
  • Protection: Reverse polarity, short-circuit resistant
  • Operating Temperature: -25°C to 70°C

Pinout

Wire Color Function Description
Brown VCC Connect to positive supply voltage (DC 6–36 V)
Blue GND Connect to ground
Black Output PNP output, goes high when metal is detected

Applications

  • Automation and robotics metal detection
  • Position sensing for mechanical systems
  • Industrial control systems
  • DIY electronics and maker projects

Wiring Diagram

Internal schematic and external wiring for a 3-wire PNP inductive proximity sensor


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