---
product_id: 140659521
title: "Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/BY"
brand: "twidec"
price: "NT$662"
currency: TWD
in_stock: true
url: https://www.desertcart.tw/products/140659521-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-no-dc
store_origin: TW
region: Taiwan
---

# 300mA Output 4mm Detecting Distance DC 6-36V Supply Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/BY

**Brand:** twidec
**Price:** NT$662
**Availability:** ✅ In Stock

## Summary

> 🔍 Discover Precision Like Never Before!

## Quick Answers

- **What is this?** Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/BY by twidec
- **How much does it cost?** NT$662 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/140659521-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-no-dc)

## Best For

- twidec enthusiasts

## Why This Product

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

## Key Features

- • **Compact Size:** With a sleek diameter of just 12mm, this sensor fits seamlessly into tight spaces.
- • **Robust Design:** Crafted with durable plastic and alloy materials, built to withstand the rigors of any environment.
- • **Easy Installation:** Comes with a 1.2m cable for hassle-free installation, making it a breeze to integrate into your systems.
- • **Precision Detection:** Experience reliable sensing with a 4mm detection range, perfect for industrial applications.
- • **Versatile Voltage Range:** Compatible with a wide voltage range of DC 6-36V, ensuring flexibility in various setups.

## Overview

The Twidec/M12 Approach Sensor Inductive Proximity Switch is a high-performance sensing solution designed for industrial applications. With a robust design, versatile voltage compatibility, and a compact size, it ensures reliable detection of metallic objects within a 4mm range. Ideal for professionals seeking efficiency and precision in their operations.

## Description

Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/BY

## Features

- Product Name：Inductive Proximity Switch; Wire Type : DC 3 Wire Type (Black, Brown, Blue);Switch Appearance Type : Cylinder Type
- Supply Voltage : DC 6-36V;Current Output : 300mA;Detect Object : Iron
- Model: LJ12A3-4-Z/BY;Theory : Inductive Sensor;Output Type: PNP NO;Diameter of Column Sensor: 12mm;Detecting Distance : 4mm
- Total Size: 6.2 x 2cm/2.4'' x 0.8'' (L*Max. Dia); Cable Length: 1.2m/47'';Net Weight :44g
- External Material : Plastic, Alloy;Package Content : 1 x Inductive Proximity Switch

## Images

![Twidec/M12 Approach Sensor Inductive Proximity Switch PNP NO DC 6-36V, 4mm Detecting Distance LJ12A3-4-Z/BY - Image 1](https://m.media-amazon.com/images/I/51+zWQh7raL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: used for geeetech A10**
A: Use Google, Facebook and other forums to determine how to wire this with your 3D printer.

**Q: will this detect brass?**
A: Yes,

**Q: Is this a Hall Effect sensor?**
A: ASIN:B07P1GKQRM This is a Hall effect sensor

**Q: Does "4mm" mean I have to place it exactly 4mm from the surface?**
A: 4mm is max distance that sensor will reliably react

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**Shop now:** [https://www.desertcart.tw/products/140659521-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-no-dc](https://www.desertcart.tw/products/140659521-twidec-m12-approach-sensor-inductive-proximity-switch-pnp-no-dc)

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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-02-01*