---
product_id: 48694281
title: "Winner Mains Polarity Tester Plug"
brand: "winner"
price: "R$253"
currency: BRL
in_stock: true
reviews_count: 8
category: "Winner"
url: https://www.desertcart.com.br/products/48694281-winner-mains-polarity-tester-plug
store_origin: BR
region: Brazil
---

# No setup needed, plug & test simplicity 3 indicator lamps for instant wiring status Compact 7.2x6.6x4.8 cm, lightweight 49.9g Winner Mains Polarity Tester Plug

**Brand:** winner
**Price:** R$253
**Availability:** ✅ In Stock

## Summary

> ⚡ Test with confidence, wire with certainty!

## Quick Answers

- **What is this?** Winner Mains Polarity Tester Plug by winner
- **How much does it cost?** R$253 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/48694281-winner-mains-polarity-tester-plug)

## Best For

- winner enthusiasts

## Why This Product

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

## Key Features

- • **Compact & Portable:** Lightweight and pocket-sized design fits effortlessly in any professional toolkit or drawer.
- • **Instant Wiring Clarity:** Three intuitive indicator lamps light up to confirm correct socket wiring or highlight faults instantly.
- • **Plug & Play Simplicity:** No complicated setup—just plug in and get immediate, reliable results every time.
- • **Visual Fault Diagnosis:** Easy-to-read front chart decodes wiring issues, empowering quick and confident troubleshooting.
- • **Trusted Safety Assurance:** Join thousands of pros who rely on this tester for peace of mind and electrical safety compliance.

## Overview

The Winner Mains Polarity Tester Plug is a compact, easy-to-use electrical tool featuring three indicator lamps that instantly verify correct socket wiring. Designed for quick fault detection without any setup, it includes a clear front chart for easy diagnosis. Lightweight and portable, it’s a must-have for professionals ensuring electrical safety and compliance.

## Description

Product Description Mains Polarity Tester Plug Box Contains Mains Polarity Tester Plug

Review: Perfect for safety - This is a great little piece of kit, well made and looks good, works perfectly and indicates if everything is connected properly and also if any connection is missing. Pure value for money, would definitely recommend it.
Review: Works as advertised - Excellent price and a useful gadget to have in the toolbox. Used to test my home sockets and gives some peace of mind that everything is as should be. Good for a quick way of fault finding.

## Features

- Mains Polarity Tester Plug
- Easy to Use: No Setting Up Required
- If all three indicator lamps light up - the socket is wired correctly
- If other variations occur the easy to follow chart on front of plug will identify problem for you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002QW3SL8 |
| Best Sellers Rank | 169,959 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,773 in Electrical Tools & Testers |
| Guaranteed software updates until | unknown |
| Item model number | 545 |
| Manufacturer | winner |
| Package Dimensions | 7.2 x 6.6 x 4.8 cm; 49.9 g |

## Images

![Winner Mains Polarity Tester Plug - Image 1](https://m.media-amazon.com/images/I/61WunbmLcaL.jpg)
![Winner Mains Polarity Tester Plug - Image 2](https://m.media-amazon.com/images/I/61vDnKfcyOL.jpg)
![Winner Mains Polarity Tester Plug - Image 3](https://m.media-amazon.com/images/I/71mhbXxqq7L.jpg)
![Winner Mains Polarity Tester Plug - Image 4](https://m.media-amazon.com/images/I/71HBJmBNWiL.jpg)

## Questions & Answers

**Q: My Flat is apparently not earthed. No idea what to do!**
A: Your flat will be earthed at the distribution board/fusebox.  It could be that the cpc/earth might be loose in the socket. Please get a competent person to check for you.

**Q: Does this test for earthing. To confirm that it is earthed?**
A: When you plug it into the wall socket it has the capability to tell you if the plug socket is not earthed. See label on plug in tester which explains the relevant displays and what they mean.

**Q: Can this check for no power at the socket ? For installing to sockets ?**
A: Yes I believe so.
It lights up for reverse and normal polarity so if no lights no power

**Q: Device showing light display not indicated on front. on off on. is this a fault in the device,?**
A: Sounds like it is a fault. When I use mine, with UK polarity, the lights are bright and correct. When used in used in Europe, with ‘reversed’ polarity, they’re much dimmer, but visible in daylight, and show the reversed polarity. If I use with a ‘reverse wired’ adaptor, in Europe, the lights are still dimmer, but are correctly illuminated.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for safety
*by A***. on 10 March 2021*

This is a great little piece of kit, well made and looks good, works perfectly and indicates if everything is connected properly and also if any connection is missing. Pure value for money, would definitely recommend it.

### ⭐⭐⭐⭐⭐ Works as advertised
*by A***N on 14 March 2021*

Excellent price and a useful gadget to have in the toolbox. Used to test my home sockets and gives some peace of mind that everything is as should be. Good for a quick way of fault finding.

### ⭐⭐⭐⭐ Much better than nothing - recommended
*by C***R on 15 December 2015*

Very good, simple & practical. However, the loss of a star is due to the statement on the back of the packet the plug came in, which states: "The testing covers most common situations except when the Earth and Neutral conductor are reversed". Now I'm no electrician, but I'm guessing that it'd have been nice to know this...

## Frequently Bought Together

- Winner Mains Polarity Tester Plug
- Eagle Caravan/Camping Reverse Polarity Adapter Fly Lead For Mains Hook Up 16A (Not for use in the UK)
- Xtremeauto 230v Continental Europe Caravan Trailer Motorhome Electric Mains Power Supply Conversion Fly Lead, European Hook Up Adaptor Plug Coupler, Campervan Site Connector, 16A Socket to Euro Plug

---

## 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.com.br/products/48694281-winner-mains-polarity-tester-plug](https://www.desertcart.com.br/products/48694281-winner-mains-polarity-tester-plug)

---

*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-03-04*