---
product_id: 51612060
title: "Kewtech KEWCHECK103 Mains Wiring Socket Tester"
brand: "kewtech"
price: "¥7773"
currency: JPY
in_stock: true
reviews_count: 8
category: "Kewtech"
url: https://www.desertcart.jp/products/51612060-kewtech-kewcheck103-mains-wiring-socket-tester
store_origin: JP
region: Japan
---

# 14 wiring conditions detected LED indicators for instant status Audible tones for clear diagnostics Kewtech KEWCHECK103 Mains Wiring Socket Tester

**Brand:** kewtech
**Price:** ¥7773
**Availability:** ✅ In Stock

## Summary

> ⚡ Don’t just test—own your home’s electrical safety with confidence!

## Quick Answers

- **What is this?** Kewtech KEWCHECK103 Mains Wiring Socket Tester by kewtech
- **How much does it cost?** ¥7773 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/51612060-kewtech-kewcheck103-mains-wiring-socket-tester)

## Best For

- kewtech enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Precision:** Instantly verify Live, Neutral & Earth wiring with zero hassle.
- • **14 Fault Codes Decoded:** Comprehensive detection of all common UK socket wiring issues.
- • **Dual LED + Tone Alerts:** Visual and audible signals ensure you never miss a fault.
- • **Trusted UK Engineering:** Kewtech’s hallmark reliability for professional-grade peace of mind.
- • **Compact & Durable Design:** Lightweight, pocket-friendly, and built to last through countless checks.

## Overview

The Kewtech KEWCHECK103 is a compact, corded mains socket tester designed for quick, accurate verification of UK plug socket wiring. It detects 14 wiring conditions using bright LED indicators and distinct audible tones, enabling both professionals and savvy homeowners to identify faults without removing socket panels. Lightweight and durable, it’s a trusted tool engineered by Kewtech for reliable, user-friendly electrical safety checks.

## Description

From the manufacturer UK mains socket tester Features Clear bright green LEDS Continuous audible tone gives positive good wiring indication Strong warbling tone gives clear warning of faulty wiring Advanced electronics gives clear indication even on noisy circuits Detects 14 wiring conditions KEWCHECK 103 Socket Tester with Audible Tone The Kewcheck 103 is a three-pin socket testing device, designed to give quick and easy indication of the status of a socket's internal wiring without the need to remove the socket panel from the wall.

Review: The Geordie's First Line of Electrical Defence - The Kewtech Mains Wiring Socket Tester has quickly become a key component of my home maintenance toolkit. While I haven't had the chance to test it on a faulty socket yet, its initial performance in checking safe sockets has been flawless, indicating its reliability. Living in South Shields, where living in a Victorian terraced house means there could be unexpected household quirks, having a tool like this on hand offers significant peace of mind. Simple, Effective, and Trustworthy Ease of use is one of the KEWCHECK103's standout features. It operates with straightforward indicators that make interpreting results a breeze, even for those of us who aren't experts in electrical systems. The tester is designed to be foolproof, providing clear diagnostics that help prevent potential hazards before they become serious. Compact Durability This tester’s compact design means it can be stored easily or carried in a toolbox without taking up much space. Its sturdy build is reassuring, suggesting that it will last through many checks and challenges - ready to prove its worth when a real test comes along. Final Thoughts: A Smart Addition for Every Household As of now, the Kewtech KEWCHECK103 has shown promising capabilities in maintaining electrical safety in my home. It stands as a proactive tool, awaiting its moment to tackle and diagnose any future electrical issues that might arise. For anyone in Shields or beyond, this socket tester is a prudent investment, ensuring that when electrical anomalies occur, you're prepared and protected.
Review: Excellent little device, if you have any three pin electrical sockets. - I love this little device. I’m not a professional electrician, just a home gamer so I don’t have bags full of testing equipment. This came in handy when one side of a twin socket started playing up, initially working intermittently and then failing completely. This showed a faulty connection and on examination ⚠️ (mains isolated first!!) ⚠️ it turned out the bus bar bridging the two sockets had burnt out (later traced back to a faulty kettle). New socket installed and tested. Didn’t work. 🫣 rather than panic I plugged this little tester in and found that the neutral wire had pulled out of the terminal while wrestling with the re-fitting of the new socket. Wiring sorted I plugged it back in and it worked fine. The audible beep (and lack thereof when no power is reaching it) was a good indication that I’d isolated the right circuit at the consumer unit. (If in doubt turn the whole supply off!). As a ray to use diagnostic tool for professional electricians and avid home gamers alike, this is invaluable to have in your tool bag. It’s a lot less intimidating for noobs than the rather dubious practice of poking multimeters or continuity testers into the plug terminals. We grow up being told NEVER to poke anything into plugs, and only those foolhardy enough to ignore this advice grow up to become electricians! Once you’ve used it for a specific job, you will then run around the house testing every socket, and when all sockets are checked, you will go door to door offering to check your neighbours’ sockets 😄

## Features

- ✔️ SIMPLE TO USE: The Kewcheck 103 Socket Tester allows you to easily check if Live, Neutral and Earth wires are wired correctly on any UK plug socket. Simply plugs into the socket for results in seconds
- ✔️ DUAL RESPONSE: The LED lights integrated into this socket tester will then light up in a certain way depending on what's detected, and the product will either emit a continuous, warbling or no tone depending on what's detected
- ✔️ QUICK AND EASY: Designed to easily give quick and clear indication of the status of a socket's internal wiring without the need to remove the socket panel from the wall.
- ✔️ 14 WIRING CONDITIONS: All of the possible indications are displayed on the front of the Kewcheck103 to help with easily understanding the test results for each socket
- ✔️ BUY WITH CONFIDENCE: The Kewtech brand has become synonymous with high quality, as we manufacture innovative, accurate and reliable test equipment specifically for the UK market.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004HU2MI2 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 8,252 in DIY & Tools ( See Top 100 in DIY & Tools ) 7 in Circuit Testers |
| Colour | Grey |
| Customer Reviews | 4.6 4.6 out of 5 stars (2,327) |
| Date First Available | 27 July 2010 |
| Included components | 1 x KEWCHECK103 |
| Item Package Quantity | 1 |
| Item Weight | 39.9 g |
| Item model number | KEWCHECK103 |
| Manufacturer | Kewtech |
| Material | Plastic |
| Number of Pieces | 1 |
| Part number | KEWCHECK103 |
| Power source type | Corded Electric |
| Product Dimensions | 6.2 x 6.2 x 5.8 cm; 40 g |
| Size | No Size |
| Style | Functional |

## Product Details

- **Brand:** Kewtech
- **Colour:** Grey
- **Item weight:** 1.41 Ounces
- **Power source:** Corded Electric
- **Style:** Functional

## Images

![Kewtech KEWCHECK103 Mains Wiring Socket Tester - Image 1](https://m.media-amazon.com/images/I/61MeUSQULjL.jpg)

## Questions & Answers

**Q: I presume it won’t trip the main RCD,when plugged in and used?….correct?**
A: Just to warn folk: Malcolm Guest said on 14 July 2021 "If the socket is not wired correctly the RCD would have already tripped". This is not correct. Lots of incorrect wirings won't trip an RCD, such as missing E, reversed LN, or any incorrect wiring (eg NE reversed) but using less than 30mA (eg with a USB charger). RCDs are to help protect user, and do NOT confirm correct wiring. PS don't forget to check your RCDs regularly by pressing their test button!

**Q: would this tell me if I had an earth leakage**
A: Really good for checking faulty sockets, it tells you if wiring is not connected or wires reversed/wrongly connected. Plug it into the socket instant check, I found an earth in a socket that had come loose. Ideal for checking after any work is done on electrics. However it will not spot earth leakage for that you need a device like the Kewtech KEW2434, if you have an earth leakage problem it's probably cheaper to pay an electrician, ( with test gear) to sort it out.

**Q: Can I test uk shavers socket with this?**
A: As far as I know the shavers have got a different plug than normal 3pin plug and the shavers also hAve got a different output as 110 or 230 v AC so I don't think that socket tester can plug into that and for sure it can not test 110

**Q: how long wil last the batery?**
A: Hi,
This is socket powered tester - this is no battery as it receives power from the mains.

Regards,
Laura

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Geordie's First Line of Electrical Defence
*by A***M on 27 May 2024*

The Kewtech Mains Wiring Socket Tester has quickly become a key component of my home maintenance toolkit. While I haven't had the chance to test it on a faulty socket yet, its initial performance in checking safe sockets has been flawless, indicating its reliability. Living in South Shields, where living in a Victorian terraced house means there could be unexpected household quirks, having a tool like this on hand offers significant peace of mind. Simple, Effective, and Trustworthy Ease of use is one of the KEWCHECK103's standout features. It operates with straightforward indicators that make interpreting results a breeze, even for those of us who aren't experts in electrical systems. The tester is designed to be foolproof, providing clear diagnostics that help prevent potential hazards before they become serious. Compact Durability This tester’s compact design means it can be stored easily or carried in a toolbox without taking up much space. Its sturdy build is reassuring, suggesting that it will last through many checks and challenges - ready to prove its worth when a real test comes along. Final Thoughts: A Smart Addition for Every Household As of now, the Kewtech KEWCHECK103 has shown promising capabilities in maintaining electrical safety in my home. It stands as a proactive tool, awaiting its moment to tackle and diagnose any future electrical issues that might arise. For anyone in Shields or beyond, this socket tester is a prudent investment, ensuring that when electrical anomalies occur, you're prepared and protected.

### ⭐⭐⭐⭐⭐ Excellent little device, if you have any three pin electrical sockets.
*by T***N on 6 January 2026*

I love this little device. I’m not a professional electrician, just a home gamer so I don’t have bags full of testing equipment. This came in handy when one side of a twin socket started playing up, initially working intermittently and then failing completely. This showed a faulty connection and on examination ⚠️ (mains isolated first!!) ⚠️ it turned out the bus bar bridging the two sockets had burnt out (later traced back to a faulty kettle). New socket installed and tested. Didn’t work. 🫣 rather than panic I plugged this little tester in and found that the neutral wire had pulled out of the terminal while wrestling with the re-fitting of the new socket. Wiring sorted I plugged it back in and it worked fine. The audible beep (and lack thereof when no power is reaching it) was a good indication that I’d isolated the right circuit at the consumer unit. (If in doubt turn the whole supply off!). As a ray to use diagnostic tool for professional electricians and avid home gamers alike, this is invaluable to have in your tool bag. It’s a lot less intimidating for noobs than the rather dubious practice of poking multimeters or continuity testers into the plug terminals. We grow up being told NEVER to poke anything into plugs, and only those foolhardy enough to ignore this advice grow up to become electricians! Once you’ve used it for a specific job, you will then run around the house testing every socket, and when all sockets are checked, you will go door to door offering to check your neighbours’ sockets 😄

### ⭐⭐⭐⭐⭐ Good basic socket tester
*by P***Y on 3 December 2025*

Perfect to check basic electrical safety and with its drop testing should be robust, better quality than many and for the price you cant go wrong. lights and sound to show faults accurately.

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-06*