---
product_id: 137492442
title: "Martindale CP501 Socket Tester - Blue (3 Pack)"
brand: "martindale"
price: "€ 340.81"
currency: EUR
in_stock: true
reviews_count: 8
category: "Automotive"
url: https://www.desertcart.be/products/137492442-martindale-cp501-socket-tester-blue-3-pack
store_origin: BE
region: Belgium
---

# Martindale CP501 Socket Tester - Blue (3 Pack)

**Brand:** martindale
**Price:** € 340.81
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Martindale CP501 Socket Tester - Blue (3 Pack) by martindale
- **How much does it cost?** € 340.81 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/137492442-martindale-cp501-socket-tester-blue-3-pack)

## Best For

- martindale enthusiasts

## Why This Product

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

## Description

Size Name:3 Pack
            
          
          
        
      
    
  


        
        
     
	       
     

     
                              
     
       	       
        
         
        
        	
        	
        		
        			The classic check plug is a quick and easy way to ensure that 13 a 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 5 mA of earth leakage, below RCD trip thresholds. It also detects 28 Fault conditions.

## Features

- Quick and easy testing of socket wiring with the check plug Detects 28 fault conditions Three bright LEDs with clear and simple fault codes on the plug Tough sculpted Design for easy removal
- ›See more product details

## Images

![Martindale CP501 Socket Tester - Blue (3 Pack) - Image 1](https://images-na.ssl-images-amazon.com/images/I/41DbL18uQzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Safety First
            
*by D***N on 4 June 2019*

As I am wiring new lights thought it best to purchase one of these and the reviews of this particular make impressed .Easy to understand and on first use help me avoid a nasty shock .For some odd reason my downstairs breaker when switched off turn off what I thought was all sockets , in fact 3 out of the four in sitting room were all off , however I had plugged this device into the socket I was spurring off ( using a fused connector )and it was clear that this particular socket was still live .After investigation at Consumer box this one socket had a breaker all to itself for some odd reasonAccident avoided work could take place safelySo glad I had this .
  

### ⭐⭐⭐⭐⭐ Excellent Tester
            
*by C***N on 12 May 2018*

Excellent tester, would highly recommend.
  

### ⭐⭐⭐⭐ Good and Practical
            
*by S***S on 28 December 2018*

Easy to use, simple to diagnose issues, good 1st line practical diagnostic tool, great instructions
  

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**Shop now:** [https://www.desertcart.be/products/137492442-martindale-cp501-socket-tester-blue-3-pack](https://www.desertcart.be/products/137492442-martindale-cp501-socket-tester-blue-3-pack)

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-04-22*