LJ18A3 Inductive Proximity Sensor

Description

LJ18A3 Inductive Proximity Sensor – NPN DC 6V-36V 3-Wire for CNC & 3D Printer Limit Switch

Detect metal targets with this LJ18A3 Inductive Proximity Sensor. Featuring an 8mm sensing distance and M18 threaded body, this sensor provides reliable non-contact detection for CNC limit switches, homing, and 3D printer applications. Whether you’re building a new machine or replacing a worn sensor, this switch delivers dependable performance.

The LJ18A3 Inductive Proximity Sensor outputs a clean NPN signal to your controller. It operates on DC 6V-36V and uses 3-wire connection for easy wiring. Unlike mechanical switches, it has no moving parts to wear out — ideal for dusty workshop environments. The sensor detects metal targets without physical contact, so there’s no wear from repeated triggering. The M18 threaded body mounts easily with standard nuts, and the 8mm sensing distance gives you flexibility in positioning.

Ideal for CNC routers, 3D printers, and industrial equipment, this Inductive Proximity Sensor installs easily with standard mounting nuts. It works with common CNC controllers including GRBL, Mach3, and Marlin. The NPN output is compatible with most controller boards, and the 3-wire connection simplifies wiring. The sensor is also protected against reverse polarity and short circuits, so it holds up in demanding environments. Whether you’re building a new machine or upgrading an existing one, this sensor delivers reliable, repeatable detection. The compact M18 size fits tight spaces, and the durable construction handles vibration and temperature changes. It’s a practical choice for anyone needing reliable limit or homing detection.

Key specs:

• Model: LJ18A3-8-Z/BX

• Type: Inductive Proximity Sensor

• Detection: 8mm

• Output: NPN NO

• Voltage: DC 6V-36V

• Wiring: 3-Wire

• Size: M18

• Application: CNC, 3D Printer, Limit Switch, Homing

Whether you’re replacing a worn sensor or building a new CNC, this LJ18A3 Inductive Proximity Sensor delivers reliable, repeatable detection for your machine.