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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 | 21,453 in DIY & Tools ( See Top 100 in DIY & Tools ) 18 in Circuit Testers |
| Brand | Martindale |
| Colour | Blue |
| Country Of Origin | China |
| Customer Reviews | 4.7 4.7 out of 5 stars (705) |
| 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 |
| 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 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Power Source | Electric |
| Product Warranty | 2 year |
| Style Name | Classic |
| Unit Count | 1.0 count |
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