








⚡ Stay powered, stay safe — test like a pro every time!
The Martindale CP501 Classic Check Plug is a compact, battery-free 240V UK socket tester that detects 28 common wiring faults using three bright LEDs for clear fault codes. Designed with a tough ABS casing and ergonomic grip, it offers quick, reliable socket verification for both electricians and homeowners.







| Manufacturer | Martindale Electric Co Ltd |
| Part number | CP501 |
| Item Weight | 60 g |
| Product Dimensions | 6.5 x 6.5 x 4.7 cm; 60 g |
| Item model number | CP501 |
| Colour | Blue |
| Style | Classic |
| Material | Abs |
| Power source type | Electric |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Measurement System | Metric |
| Measurement Accuracy | 50kohm |
| Included components | 1 x Martindale Socket Tester |
| Batteries included? | No |
| Batteries Required? | No |
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