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🔌 Plug in, light up, and never second-guess your socket safety again!
The Martindale CP501 Classic Check Plug is a compact, reliable 240V socket tester designed for quick and accurate verification of UK socket wiring. Featuring three bright LEDs that detect 28 common wiring faults, it offers clear fault codes for instant diagnosis. Its tough, ergonomic design ensures easy handling and removal, making it a trusted tool for electricians and homeowners alike. With over 2 million units sold and a 2-year warranty, it’s the go-to device for fast, fail-safe socket safety checks.
| ASIN | B003OHDFSA |
| Best Sellers Rank | 26,389 in DIY & Tools ( See Top 100 in DIY & Tools ) 22 in Circuit Testers |
| Brand | Martindale |
| Colour | Blue |
| Customer Reviews | 4.7 out of 5 stars 705 Reviews |
| Global Trade Identification Number | 05036162183003 |
| Included Components | 1 x Martindale Socket Tester |
| Item Dimensions | 6.5 x 6.5 x 4.7 centimetres |
| Item Type Name | Socket Tester |
| Item Weight | 0.06 Kilograms |
| Item dimensions L x W x H | 6.5 x 6.5 x 4.7 centimetres |
| Item weight | 0.06 Kilograms |
| Manufacturer | Martindale Electric Co Ltd |
| Manufacturer Part Number | CP501 |
| Maximum Operating Voltage | 240 Volts |
| Measurement Type | Electrical |
| Minimum Operating Voltage | 240 Volts |
| Model Number | CP501 |
| Power Source | Electric |
| Power source | Electric |
| Product Warranty | 2 year |
| Style | Classic |
| Style Name | Classic |
| Unit Count | 1.0 count |
J**N
Simple and Reliable Socket Safety Checker
The CP501 Classic Check socket tester is a handy tool for quickly checking the safety of your 240V sockets. It’s very straightforward to use—just plug it in and the indicator lights clearly show whether the wiring is correct or if there’s a fault. This makes it ideal for both DIY users and anyone wanting extra peace of mind at home. The compact design is easy to carry around, so you can test multiple sockets without hassle. The light indicators are bright and easy to understand once you’ve checked the guide. It feels solid enough for regular use and doesn’t require any setup or batteries. It’s especially useful for identifying common wiring issues quickly, though it’s more of a basic diagnostic tool rather than a full electrical tester. Overall, a simple, effective, and affordable device for checking socket safety.
M**N
Good product. Recommend.
Bought a few of these now.
B**3
Recommend
Great value, packaged well. Does the job.
A**E
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.
S**.
Handy tool
Handy to have in your tool box.
B**N
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!!
T**Y
Brilliant plug
This is a great item. The previous one from a different company didn’t work
C**E
Does all you need it to.
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.
Trustpilot
1 day ago
4 days ago