---
product_id: 299330389
title: "Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach"
brand: "taiss"
price: "€ 67.13"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.nl/products/299330389-taiss-2pcs-lj12a3-4-z-ax-inductive-proximity-sensor-detection
store_origin: NL
region: Netherlands
---

# 4mm precise detection range Wide 6-36V DC voltage compatibility 300mA robust output current Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach

**Brand:** taiss
**Price:** € 67.13
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your automation game with precision sensing that never misses a beat!

## Quick Answers

- **What is this?** Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach by taiss
- **How much does it cost?** € 67.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/299330389-taiss-2pcs-lj12a3-4-z-ax-inductive-proximity-sensor-detection)

## Best For

- taiss enthusiasts

## Why This Product

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

## Key Features

- • **Durable Design:** Encased in a sleek metal shell ensuring longevity and resistance in demanding environments.
- • **Power Flexibility:** Operates seamlessly across a broad 6-36V DC spectrum to fit diverse industrial setups.
- • **Pinpoint Precision:** Detects iron objects within a razor-sharp 4mm range for flawless automation.
- • **Plug & Play Wiring:** Intuitive 3-wire connection (Brown, Blue, Black) for hassle-free installation and integration.
- • **Dual Pack Advantage:** Two sensors included to double your detection capabilities and streamline your projects.

## Overview

The Taiss LJ12A3-4-Z/AX is a high-performance inductive proximity sensor featuring a 4mm detection distance, NPN normally closed output, and wide 6-36V DC voltage compatibility. Its robust metal cylinder design and 300mA output current make it ideal for reliable iron object detection in industrial automation. Packaged as a convenient 2-piece set, it offers easy 3-wire installation and durable operation for professional-grade sensing solutions.

## Description

Description: Case material: Metal / Copper Output Status: Normally Close Detection objects: Conductor Voltage: DC 6-36V Output Current: 300mA Polarity: NPN Dimension: M12x1x55mm Detection Distance: 4 mm Part number: LJ12A3-4-Z/AX Three wires wiring connection: Brown is connected to the positive power supply. Blue is connected to the negative power supply. Black is connected to the load. Package Included: 2X Inductive Proximity Sensor Detection Switch

## Features

- Product Name : Inductive Proximity Switch;Model : LJ12A3-4-Z/AX;Theory : Inductive Sensor;Wire Type : 3 Wire Type (Brown, Blue, Black)
- Switch Appearance Type : Cylinder Type, Metal Shell;Output Type : NPN NC;
- Detecting Distance : 4mm(+/-10%);Supply Voltage : DC 6-36V Output Current : 300mA;Detect Object : Iron;Column Sensor Diameter : 10.4mm/0.4";Thread Diameter : 12mm/0.5"
- Total Size : 66 x 21mm/ 2.6'' x 0.8'' (L*Max.D);Cable Length : 1.16m/35.7'';External Material : Plastic, Metal
- Net Weight :100g;Color : Blue Tone, Black ;Package Content : 2 x Inductive Proximity Switch

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Taiss |
| Manufacturer | Taiss |
| Country of Origin | USA |
| Model number | JJ-0021 |
| Colour | NPN NC |
| Item Weight | 59 g |
| Package Dimensions | 10.9 x 7.49 x 1.8 cm; 59 g |
| Item model number | JJ-0021 |
| Are batteries included? | No |

## Images

![Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach - Image 1](https://m.media-amazon.com/images/I/71ZBJ1nVdnL.jpg)
![Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach - Image 2](https://m.media-amazon.com/images/I/615pLai1VZL.jpg)
![Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach - Image 3](https://m.media-amazon.com/images/I/71zwvUZxIYL.jpg)
![Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach - Image 4](https://m.media-amazon.com/images/I/51CoU7dS5OL.jpg)
![Taiss 2pcs LJ12A3-4-Z/AX Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close Proximity Switch 6-36V Approach - Image 5](https://m.media-amazon.com/images/I/51FwHkW1nKL.jpg)

## Questions & Answers

**Q: dumb question but does this only detect proximity of metal or magnetic device or would it detect  a human finger being used as no-touch switch?**
A: Metal only.  It does detect any metal however.

**Q: Is it waterproof?**
A: It is sealed and stainless so it is very water resistant. It's not made to be submersed in water, though it could last for a time underwater. The sensor can take a light stream of water, but would likely fail under high pressure washdown over time.

**Q: How sensitive is this switch to aluminum?  4mm?  2mm?  Thanks**
A: Distance or thickness of material?  I was able to trip it with a small aluminum tube but it had to make physical contact with the center of the switch.

**Q: it is assumed sensor has voltage applied; is sensor closed then opens when tripped?**
A: Depends on if it a normally open or normally closed sensor.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    works on my 3D printer
  

*by J***M on Reviewed in the United States on 18 August 2023*

using it as a Z probe on my ender 3. the description says "6v-36v" but it works fine off 5v.according to the deviation test this probe has 0.001mm deviation

### ⭐ 







  
  
    Not as advertised.
  

*by D***L on Reviewed in the United States on 26 August 2021*

This ships as a single unit not 2 as described. It is also a NO switch not NC as shown in the descriptiom

### ⭐⭐⭐⭐⭐ 







  
  
    Worked well in my application.
  

*by Z***E on Reviewed in the United States on 14 June 2021*

Worked well for my application.  I'm using small pieces of brass so the 4MM range is shortened.

## Frequently Bought Together

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-01-23*