---
product_id: 52874555
title: "CP501"
brand: "martindale"
price: "37117CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Martindale"
url: https://www.desertcart.sn/products/52874555-cp501
store_origin: SN
region: Senegal
---

# 240V UK socket compatibility Detects 28 wiring fault conditions 3 bright LEDs for instant fault codes CP501

**Brand:** martindale
**Price:** 37117CFA
**Availability:** ✅ In Stock

## Summary

> ⚡ Plug in confidence, test with clarity!

## Quick Answers

- **What is this?** CP501 by martindale
- **How much does it cost?** 37117CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/52874555-cp501)

## 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

- • **Ergonomic & Durable:** Sculpted ABS grip ensures effortless removal and long-lasting use.
- • **Trusted by Millions:** Over 2 million units sold—join the community of confident electricians and homeowners.
- • **Clear Visual Indicators:** Three bright LEDs deliver fail-safe, easy-to-read fault codes.
- • **Instant Safety Assurance:** Quickly verify 240V UK sockets with a trusted classic.
- • **Comprehensive Fault Detection:** Pinpoints 28 common wiring issues for total peace of mind.

## Overview

The Martindale CP501 is a compact, battery-free socket tester designed for quick and reliable verification of 240V UK sockets. Featuring three bright LEDs that indicate 28 common wiring faults, its robust ABS housing with a sculpted grip ensures easy handling. Trusted by over 2 million users, it’s the go-to tool for electricians and homeowners seeking fast, fail-safe socket safety checks.

## 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: Classic, works as you'd expect - Does what it should, reliable & robust.
Review: Easy to Use - Arrived quickly. The device works perfectly, no issues. I didn't even have to read the instructions...but I did anyway. Cheers.

## 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 | 19,129 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Circuit Testers |
| Colour | Blue |
| Customer Reviews | 4.7 4.7 out of 5 stars (702) |
| 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

![CP501 - Image 1](https://m.media-amazon.com/images/I/61JnqbmHWCL.jpg)
![CP501 - Image 2](https://m.media-amazon.com/images/I/51tQKwpyKWL.jpg)
![CP501 - Image 3](https://m.media-amazon.com/images/I/511QconXEkL.jpg)
![CP501 - Image 4](https://m.media-amazon.com/images/I/51UAe55+YEL.jpg)
![CP501 - Image 5](https://m.media-amazon.com/images/I/51aQCDwBLrL.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

### ⭐⭐⭐⭐⭐ Classic, works as you'd expect
*by P***R on 24 October 2024*

Does what it should, reliable & robust.

### ⭐⭐⭐⭐⭐ Easy to Use
*by A***E on 27 January 2026*

Arrived quickly. The device works perfectly, no issues. I didn't even have to read the instructions...but I did anyway. Cheers.

### ⭐⭐⭐⭐ Does all you need it to.
*by C***E on 11 July 2025*

Perfect for work as an electrician. Always bemuses me though the price for the sake of a buzzer compared to those without. Only reason it’s not 5 stars.

## 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

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**Shop now:** [https://www.desertcart.sn/products/52874555-cp501](https://www.desertcart.sn/products/52874555-cp501)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-09*