---
product_id: 598150006
title: "Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack)"
price: "₨12506"
currency: LKR
in_stock: true
reviews_count: 8
url: https://www.desertcart.lk/products/598150006-inductive-proximity-sensor-sn04-n-normally-open-detection-approach-switch
store_origin: LK
region: Sri Lanka
---

# 5-30V wide voltage supply 4mm precise detection range 4-pack with mounting brackets Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack)

**Price:** ₨12506
**Availability:** ✅ In Stock

## Summary

> 🔵 Elevate your automation game with precision sensing that just works.

## Quick Answers

- **What is this?** Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack)
- **How much does it cost?** ₨12506 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/598150006-inductive-proximity-sensor-sn04-n-normally-open-detection-approach-switch)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pinpoint Precision:** Detect metal objects reliably within 4mm for flawless automation.
- • **Plug & Play Wiring:** Simple 3-wire NPN NO configuration ensures quick, hassle-free installation.
- • **Robust Voltage Range:** Operates smoothly from 5 to 30V DC, fitting diverse industrial setups.
- • **Clear Visual Feedback:** Integrated LED indicator instantly signals detection status—no guesswork.
- • **Complete Mounting Kit:** Includes 4 SN brackets for secure, professional-grade sensor placement.

## Overview

The Inductive Proximity Sensor SN04-N is a 3-wire NPN normally open switch designed for precise metal detection up to 4mm. Operating on a versatile 5-30V DC supply and supporting up to 300mA output current, it features an LED indicator for real-time status and comes in a convenient 4-pack with mounting brackets, ideal for industrial automation, machine tools, and DIY projects.

## Description

desertcart.com: Haldzemo Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack) : Industrial & Scientific

Review: Worked well - Works great and as intended.
Review: Will do the job. - met my requirements, but I wish the wire leads were a little longer.

## Features

- Inductive Proximity Switch Type: SN04-N, 3 Wire NPN NO. Detecting Distance: 4mm. Supply Voltage: 5-30VDC, Current Output: 300mA.
- LED working indicator: signal indicator, when sensing metal objects the light is on for normally open, the light is off for normally closed.
- Wiring Method: Brown connect to Positive, Blue connect to Negative, Black connect to Load (signal output).
- When proximity switch is close to some target object, it will send out control signal. Widely used for machine tool industry, frequency counters and other automatic control system, or you can use it for DIY 3D Printer.
- You will get 4pcs inductive proximity switch + 4pcs SN Bracket

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.3 out of 5 stars 24 Reviews |

## Images

![Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack) - Image 1](https://m.media-amazon.com/images/I/61RuTQ5Y5vL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Worked well
*by A***N on October 28, 2025*

Works great and as intended.

### ⭐⭐⭐⭐ Will do the job.
*by S***. on July 4, 2025*

met my requirements, but I wish the wire leads were a little longer.

### ⭐⭐⭐⭐⭐ Worked perfectly.
*by B***N on January 21, 2026*

Very pleased with the sensors. Placed on a custom built laser engraver and they detected the metal flag. Reliability and repeatability in all four.

## Frequently Bought Together

- Haldzemo Inductive Proximity Sensor SN04-N Normally Open Detection Approach Switch NPN NO with TL PL SN Bracket (Blue, 4 Pack)
- Taiss 2PCS M12 4mm Sensing DC 5V NPN NO（Normally Open） 3D Printer LJ12A3-4-Z/BX-5V Cylinder inductive Proximity Sensor Switch Work Voltage 5VDC Special for MCU

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.lk/products/598150006-inductive-proximity-sensor-sn04-n-normally-open-detection-approach-switch](https://www.desertcart.lk/products/598150006-inductive-proximity-sensor-sn04-n-normally-open-detection-approach-switch)

---

*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-06*