---
product_id: 173795891
title: "Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery"
brand: "gltl"
price: "€ 77.29"
currency: EUR
in_stock: true
reviews_count: 4
url: https://www.desertcart.com.cy/products/173795891-magnetic-polarity-tester-with-5mt-sensitivity-one-button-operation-electric
store_origin: CY
region: Cyprus
---

# Compact size 140x20x19mm Battery life > 10h Temp range -20℃ to +80℃ Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery

**Brand:** gltl
**Price:** € 77.29
**Availability:** ✅ In Stock

## Summary

> 🔍 Discover the unseen with precision!

## Quick Answers

- **What is this?** Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery by gltl
- **How much does it cost?** € 77.29 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/173795891-magnetic-polarity-tester-with-5mt-sensitivity-one-button-operation-electric)

## Best For

- gltl enthusiasts

## Why This Product

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

## Key Features

- • **Robust Design:** Withstands extreme temperatures from -40℃ to +150℃.
- • **User-Friendly:** Lightweight and portable for on-the-go testing.
- • **Dual LED Display:** Instantly see S pole (green) and N pole (red) indicators.
- • **Long-Lasting Power:** Operates on a single AAA battery for over 10 hours.
- • **Precision Detection:** Identify magnetic poles with ±5mt sensitivity.

## Overview

The Magnetic Polarity Tester is a compact and efficient tool designed for identifying magnetic poles with high sensitivity. Featuring a dual LED display for easy reading, it operates in extreme temperatures and boasts a long battery life, making it ideal for professionals in various fields.

## Description

Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery

## Features

- Induction value: 0.005 tesla = 5 mt, Sensitivity: ± 5mt.
- Size: about 140 * 20 * 19mm,Sensitive area 6 * 3mm.
- Display: 2 LED display (green = S pole, red = N pole).
- Use battery: 1X1.5V LR03 AAA battery （Not included）(continuous use time > 10 hours).
- Service temperature: - 20℃ ~ + 80℃, Storage temperature: - 40℃ ~ + 150℃.

## Images

![Magnetic Polarity Tester with ±5mT Sensitivity, One-Button Operation for Electric Motors/Coils/Magnets Assembly - LED N/S Detection Pen, Portable Gauss Meter with 10-Hour Battery - Image 1](https://m.media-amazon.com/images/I/41i9V+93V+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    GOOD PRODUCT
  

*by R***A on Reviewed in the United States on March 1, 2023*

This product works good in what is advertise it but just only check polarity not test the amount of gauss in the magnet.

### ⭐ 1.0 out of 5 stars







  
  
    Overpriced!
  

*by M***E on Reviewed in the United States on August 8, 2024*

I have not bought this product, and I don’t doubt that it probably works as intended. But WOW… OVER-engineered and OVERpriced, when all you need is a simple magnet.Basic physics test: If you want to know an unknown magnet’s polarity, just expose it to another (weaker) magnet whose polarity is already known, like a cheap (~$5) stick magnet whose ends are already labeled with N and S. (And you can confirm the N/S accuracy with a compass, if needed; like with the Earth, the compass points toward N pole of magnet.)>If the known magnet S pole is DRAWN TO and N pole is REPELLED FROM your unknown metal surface, then that surface is the unknown’s N pole (opposites attract, sames repel).>If N pole drawn to and S pole repelled, then the unknown metal surface is the unknown’s S pole.>If BOTH N and S poles are drawn to the surface, then the unknown metal surface is paramagnetic, like your fridge door; a magnet can stick to it, but the surface has no permanent polarity.Lesson over. Happy shopping.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    I never knew these existed
  

*by D***S on Reviewed in the United States on July 20, 2021*

I have more magnets than ever now, and they are very useful generally; but for some applications you need to identify the North and South poles and their orientations to properly install the magnets correctly.  This little tool lets you identify the orientation, potentially saving you a bunch of time.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.com.cy/products/173795891-magnetic-polarity-tester-with-5mt-sensitivity-one-button-operation-electric](https://www.desertcart.com.cy/products/173795891-magnetic-polarity-tester-with-5mt-sensitivity-one-button-operation-electric)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-25*