---
product_id: 52874555
title: "Martindale CP501 Classic Check Plug 240V Socket Tester, Blue"
brand: "martindale"
price: "6543 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Martindale"
url: https://www.desertcart.kg/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue
store_origin: KG
region: Kyrgyzstan
---

# 240V UK socket compatibility Detects 28 wiring faults 3 bright LEDs with fault codes Martindale CP501 Classic Check Plug 240V Socket Tester, Blue

**Brand:** martindale
**Price:** 6543 som
**Availability:** ✅ In Stock

## Summary

> 🔌 Plug in confidence, test with precision!

## Quick Answers

- **What is this?** Martindale CP501 Classic Check Plug 240V Socket Tester, Blue by martindale
- **How much does it cost?** 6543 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue)

## Best For

- martindale enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Millions:** Over 2 million units sold—join the savvy pros and homeowners.
- • **Effortless Operation:** Compact, sculpted grip design for easy plug removal every time.
- • **Built to Last & Comply:** Robust ABS housing with CAT II 300V safety rating ensures durability and peace of mind.
- • **Fault Detection Mastery:** Pinpoint 28 common wiring issues with clear LED indicators.
- • **Instant Safety Assurance:** Quickly verify 240V UK sockets with a trusted classic.

## Overview

The Martindale CP501 is the UK’s best-selling 240V socket tester, trusted by over 2 million users for fast, reliable detection of 28 wiring faults. Featuring three bright LEDs with intuitive fault codes and a tough, ergonomic design, it ensures electricians and homeowners can verify socket safety instantly without batteries or hassle.

## Description

From the manufacturer Martindale CP501 Classic Check Plug 240V Socket Tester Sold in over 2 million units, the Martindale CP501 is the most popular socket tester available. The classic check plug is a quick and easy way to ensure that 13A sockets are correctly wired, indicated by 3 bright long life LEDs. Wiring faults are indicated by one or more of the LEDs failing to illuminate, with the pattern of lit LEDs indicating the type of fault detected. This fail-safe system means that any LED not lit indicates a fault. The robust ABS housing has a sculpted shape for easy removal and there is a look up chart on the tester for quick fault diagnosis. The plug induces less than 5mA of earth leakage, well below RCD trip thresholds. Quick & easy testing of socket wiring with the UK’s favourite check plug Detects 28 fault conditions Three bright LEDs with clear & simple fault codes on the plug Tough sculpted design for easy removal CAT II 300V - Built for safety Quick & easy testing of mains socket wiring Three bright LEDs with simple fault codes

Review: Brilliant plug - This is a great item. The previous one from a different company didn’t work
Review: A Classic Tester which works very well - Martindale testers have been around for decades, are simple to use and reliable. I quickly found out some of my sockets had live and neutral reversed - so much for professional installers!!

## Features

- Quick and easy testing of 240V UK sockets to ensure correct wiring and safety compliance
- Detects 28 common wiring fault conditions for reliable electrical safety checks
- Three bright LEDs with clear fault codes for instant and accurate identification
- Compact and tough design with sculpted grip for easy removal from sockets
- Ideal for electricians and homeowners for fast socket verification before use

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003OHDFSA |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 25,094 in DIY & Tools ( See Top 100 in DIY & Tools ) 25 in Circuit Testers |
| Colour | Blue |
| Customer Reviews | 4.7 4.7 out of 5 stars (695) |
| Date First Available | 29 May 2010 |
| Included components | 1 x Martindale Socket Tester |
| Item Package Quantity | 1 |
| Item Weight | 60 g |
| Item model number | CP501 |
| Manufacturer | Martindale Electric Co Ltd |
| Material | Abs |
| Measurement Accuracy | 50kohm |
| Measurement System | Metric |
| Number of Pieces | 1 |
| Part number | CP501 |
| Pattern | Three LEDs with fault codes |
| Power source type | Electric |
| Product Dimensions | 6.5 x 6.5 x 4.7 cm; 60 g |
| Style | Classic |

## Product Details

- **Brand:** Martindale
- **Colour:** Blue
- **Item weight:** 0.06 Kilograms
- **Power source:** Electric
- **Style:** Classic

## Images

![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - Image 1](https://m.media-amazon.com/images/I/61JnqbmHWCL.jpg)

## Questions & Answers

**Q: Will this show up a socket that has power fluctuations?**
A: The Martindale CP501 Socket Tester is primarily designed to identify wiring faults and will not reliably show power fluctuations.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brilliant plug
*by T***Y on 7 April 2025*

This is a great item. The previous one from a different company didn’t work

### ⭐⭐⭐⭐⭐ A Classic Tester which works very well
*by B***N on 3 February 2024*

Martindale testers have been around for decades, are simple to use and reliable. I quickly found out some of my sockets had live and neutral reversed - so much for professional installers!!

### ⭐⭐⭐⭐ Does The Job But...
*by S***F on 23 February 2024*

This will tell you if you have power or various combinations of crossed mains wires etc and works OK but I wish I had bought the version with the buzzer. With an audible warning if there is power to the socket I do not have to keep checking at the consumer unit. Apart from that it is handy, sturdy and small enough to have in your tool bag.

## Frequently Bought Together

- Martindale CP501 Classic Check Plug 240V Socket Tester, Blue
- Martindale VT12 Two Pole Voltage and Continuity Tester, Yellow
- Martindale Electric NC4 Dual Sensitivity Voltage Tester, Volt Stick with Torch, Circuit Tester

---

## 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.kg/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue](https://www.desertcart.kg/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue)

---

*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-01-23*