---
product_id: 94978571
title: "Heschen M12 Inductive Proximity Sensor Switch, Non-shield Type, LJ12A3-4-Z/BY Detector, 4mm, 10-30 VDC, 200mA, PNP NO, 3 Wire, Magnetic Metal, IP67, Blue"
brand: "heschen"
price: "$22"
currency: NZD
in_stock: true
reviews_count: 6
category: "Heschen"
url: https://www.desertcart.nz/products/94978571-heschen-m12-inductive-proximity-sensor-switch-non-shield-type-lj12a3
store_origin: NZ
region: New Zealand
---

# IP67 waterproof & dustproof rating 4mm precise detection range 10-30 VDC wide voltage compatibility Heschen M12 Inductive Proximity Sensor Switch, Non-shield Type, LJ12A3-4-Z/BY Detector, 4mm, 10-30 VDC, 200mA, PNP NO, 3 Wire, Magnetic Metal, IP67, Blue

**Brand:** heschen
**Price:** $22
**Availability:** ✅ In Stock

## Summary

> 🔵 Precision sensing that keeps your automation ahead of the curve!

## Quick Answers

- **What is this?** Heschen M12 Inductive Proximity Sensor Switch, Non-shield Type, LJ12A3-4-Z/BY Detector, 4mm, 10-30 VDC, 200mA, PNP NO, 3 Wire, Magnetic Metal, IP67, Blue by heschen
- **How much does it cost?** $22 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/94978571-heschen-m12-inductive-proximity-sensor-switch-non-shield-type-lj12a3)

## Best For

- heschen enthusiasts

## Why This Product

- Trusted heschen brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pinpoint Accuracy:** Detects magnetic metal objects within a tight 4mm ±10% range for flawless automation.
- • **Robust Power Handling:** Operates seamlessly across 10-30 VDC with 200mA current output, ensuring stable performance.
- • **Plug & Play Reliability:** Built-in power reversal and short-circuit protection for hassle-free integration with PLCs.
- • **Visual Status Indicator:** Red LED instantly confirms sensor activity, keeping your system status crystal clear.
- • **Durable Industrial Grade:** IP67-rated protection means it thrives in harsh environments—dust tight and water resistant.

## Overview

The Heschen M12 Inductive Proximity Sensor Switch is a compact, non-shield type sensor designed for detecting magnetic metal objects within a 4mm range. It supports a wide voltage input of 10-30 VDC and delivers a 200mA PNP normally open output. With IP67 protection, power reversal and short-circuit safeguards, plus a clear red LED status indicator, it offers reliable, industrial-grade performance ideal for seamless integration with PLC systems in demanding environments.

## Description

Power supply reversal connection protection; short-circuit protection, can directly connect with PLCUsed in common places with medium enviroment resistanceRed LED indicates that it's available to detect the sensor operation stateEconomic and simple operationWidely used, can be substitution of min-type switch and limit switchIP 67 protection

Review: Total rubbish - Stopped working after a few weeks. Do not reccomend.
Review: Llega a tiempo, funcionando como era de esperar.

## Features

- Mounting Hole Diameter: 12mm;Cable length: 120cm/48"
- Detecting Distance: 4mm±10%;Set distance: 0-3.6mm
- Output Type: PNP NO(Normally Open);Non-shield Type
- Current Output: 200mA;Working Voltage: 10-30 VDC
- Detect Object: Magnetic Metal

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071FR2R85 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 15,189 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 3 in Inductive Proximity Sensors |
| Colour | Blue |
| Customer Reviews | 4.4 4.4 out of 5 stars (131) |
| Date First Available | 21 May 2017 |
| Item Package Quantity | 1 |
| Item Weight | 40 g |
| Item model number | HS-LJ12A3-4-Z/BY |
| Manufacturer | Heschen Electric Co.Ltd |
| Package Dimensions | 9.3 x 5.9 x 2.1 cm; 40 g |
| Part number | LJ12A3-4-Z/BY |
| Plug profile | Pole Mount |
| Power source type | Corded Electric |
| tech_spec_battery_description_toys | Battery operated, type not specified |

## Product Details

- **Brand:** Heschen
- **Colour:** Blue
- **Item weight:** 0.04 Kilograms
- **Mounting type:** Pole Mount
- **Power source:** Corded Electric

## Images

![Heschen M12 Inductive Proximity Sensor Switch, Non-shield Type, LJ12A3-4-Z/BY Detector, 4mm, 10-30 VDC, 200mA, PNP NO, 3 Wire, Magnetic Metal, IP67, Blue - Image 1](https://m.media-amazon.com/images/I/61XwXWwJ0SL.jpg)

## Customer Reviews

### ⭐ Total rubbish
*by S***B on 4 November 2023*

Stopped working after a few weeks. Do not reccomend.

### ⭐⭐⭐⭐⭐ Review
*by P***O on 2 July 2025*

Llega a tiempo, funcionando como era de esperar.

### ⭐⭐⭐⭐⭐ Review
*by A***H on 4 May 2025*

Preis-Leistungsverhältnis perfekt.

## Frequently Bought Together

- Heschen M12 Inductive Proximity Sensor Switch, Non-shield Type, LJ12A3-4-Z/BY Detector, 4mm, 10-30 VDC, 200mA, PNP NO, 3 Wire, Magnetic Metal, IP67, Blue
- 2Pcs LJ12A3-4-Z/AY M12 Approach Sensor Inductive Proximity Sensor Switch Detector Non-Shield Type PNP NC DC 6-36V 200mA 4mm Detecting Distance 3 Wire for 3D Printer Probe Bed Leveling,MCU Board

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**Shop now:** [https://www.desertcart.nz/products/94978571-heschen-m12-inductive-proximity-sensor-switch-non-shield-type-lj12a3](https://www.desertcart.nz/products/94978571-heschen-m12-inductive-proximity-sensor-switch-non-shield-type-lj12a3)

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-20*