---
product_id: 497180785
title: "Taiss 2pcs LJ12A3-4-Z/AX Proximity Switch Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close 6-36V"
brand: "taiss"
price: "R776"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/497180785-taiss-2pcs-lj12a3-4-z-ax-proximity-switch-inductive-proximity
store_origin: ZA
region: South Africa
---

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

**Brand:** taiss
**Price:** R776
**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 Proximity Switch Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close 6-36V by taiss
- **How much does it cost?** R776 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/497180785-taiss-2pcs-lj12a3-4-z-ax-proximity-switch-inductive-proximity)

## 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 with a compact 12mm threaded cylinder for easy integration.
- • **Reliable Output:** NPN Normally Closed output ensures stable and fail-safe switching performance.
- • **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:** Clear 3-wire connection (Brown, Blue, Black) for hassle-free installation and maintenance.

## Overview

The Taiss LJ12A3-4-Z/AX is a high-performance inductive proximity sensor featuring a 4mm detection range, NPN Normally Closed output, and wide 6-36V DC voltage compatibility. Its robust metal shell and compact design make it ideal for precise iron object detection in industrial automation, delivering reliable switching with a 300mA output current. Packaged as a 2-piece set, it offers easy installation with a standard 3-wire connection.

## 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 |
|---------------|-------|
| Manufacturer | Taiss |
| Part number | JJ-0021 |
| Item Weight | 59 g |
| Package Dimensions | 10.9 x 7.49 x 1.8 cm; 59 g |
| Item model number | JJ-0021 |
| Size | NPN NC |
| Colour | NPN NC |
| Material | Plastic Metal |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Images

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

## Frequently Bought Together

- Taiss 2pcs LJ12A3-4-Z/AX Proximity Switch Inductive Proximity Sensor Detection Switch NPN NC DC 6V-36V 4mm Normally Close 6-36V
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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-13*