# Inductive proximity sensor, NPN, NC, LJA18M-10N2, 6-36V

- Page: https://sigmanortec.ro/en/inductive-proximity-sensor-npn-nc-lja18m-10n2-6-36v
- Price: 55.08 RON
- Availability: In stock; 1-2 zile
- Reference: 88208 · EAN: 5949773783480
- Category: Mechatronics and IoT > Sensors and Modules > Proximity and Photoelectric Sensors
- Specifications: Input Voltage: 6 - 36 V; Input Voltage Type: “DC” in Romanian can mean **“de ce”**, which translates to **“why”** in English.; Contact type: NC; Sensor output type: NPN; Detection distance: 10 mm; Body diameter: 18 mm
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 04:49 (Europe/Bucharest)

## Description

Inductive proximity sensor for non-contact detection of metal objects, ideal for industrial automation and DIY projects. It offers a 10 mm detection distance, NPN normally closed output compatible with PLCs and microcontrollers, 6-36 VDC power supply, and status LED. Robust M18 nickel-plated brass housing and IP67 protection for dusty and humid environments.
Inductive sensor from the LJA series designed for contactless detection of metal objects. The cylindrical body with a diameter of 18mm (M18) allows quick installation in various industrial applications or DIY projects. The LJA18M-10N2 variant features a detection distance of 10 mm, NPN output, normally closed (NC), operates at a supply voltage range of 6-36 VDC, and has an integrated 2-meter cable with 3 wires. The sensor is of the non-flush type.
The status LED indicates the presence of an object within the detection range, and the integrated protections (short circuit, reverse polarity) ensure safe operation in industrial environments.
Specifications:
Body diameter: 18 mm (M18)
Mounting type: Non-flush
Supply voltage: 6 - 36 VDC
Current consumption: ≤ 15 mA (no load)
Output current: ≤ 300 mA
Standard detection distance: 10 mm
Response frequency: 0.2 KHz
Output type: NPN, NC (normally closed)
Protections: Short circuit, reverse polarity
Operating temperature: -25 ~ 65°C
Protection rating: IP67
Cable: 3 wires, 2 m length, PVC insulation
Housing material: Nickel-plated brass
Sensing surface: ABS
Pinout:
Wire color
Signal
Description
Brown
VCC
Positive supply (6-36V DC)
Blue
GND
Ground
Black
OUT
NPN output
Usage:
Install the sensor on an M18-compatible mount, ensuring a free distance from other metal objects that could interfere with detection.
Connect the brown wire to the power source (6-36 VDC), the blue wire to ground, and the black wire to the controller input (PLC, Arduino, relay, etc.).
For stable operation, it is recommended to set the working distance to a maximum of 70% of the standard detection distance. The standard detection distance (10 mm) applies to iron. For other metals, the effective distance is calculated by multiplying the standard detection distance by the corresponding correction coefficient:
Steel: ~0.9
Brass: ~0.7
Chrome-nickel: ~0.6
Aluminum: ~0.4
When no metal object is in front of the sensor, the output is ON (switched to GND, LOW level), activating the load connected between the output and VCC. When a metal object enters the detection range, the output switches OFF (zero voltage), and the built-in LED lights up.
Warning!
Do not exceed the maximum output current of 300 mA; for large loads (gear motors, bulbs, etc.), use an intermediate relay.
In applications with strong interference, install an overvoltage protection device.
Do not use the sensor within the first 100 ms after powering on, as this is the stabilization period.