--- product_id: 52874555 title: "Martindale CP501 Classic Check Plug 240V Socket Tester, Blue" brand: "martindale" price: "β‚±2400" currency: PHP in_stock: true reviews_count: 8 category: "Martindale" url: https://www.desertcart.ph/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue store_origin: PH region: Philippines --- # 240V max voltage 3 bright LEDs for instant fault ID Detects 28 wiring faults Martindale CP501 Classic Check Plug 240V Socket Tester, Blue **Brand:** martindale **Price:** β‚±2400 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Plug in confidence, test with precision! ## Quick Answers - **What is this?** Martindale CP501 Classic Check Plug 240V Socket Tester, Blue by martindale - **How much does it cost?** β‚±2400 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue) ## 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 - β€’ **Ergonomic & Durable:** Sculpted grip and tough ABS housing for effortless use and longevity - β€’ **Trusted by Millions:** Over 2 million units soldβ€”join the community of confident electricians and homeowners - β€’ **Clear Visual Indicators:** Three bright LEDs provide immediate, easy-to-read fault codes - β€’ **Instant Safety Assurance:** Quickly verify UK 240V sockets with a trusted classic - β€’ **Comprehensive Fault Detection:** Pinpoints 28 common wiring issues for total peace of mind ## Overview The Martindale CP501 Classic Check Plug is a compact, robust 240V socket tester designed for quick and reliable verification of UK electrical outlets. Featuring three bright LEDs that detect 28 wiring faults, it ensures safety compliance with clear fault codes. Its ergonomic design and proven reliability make it a top choice for both professionals and homeowners. ## 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 | | Best Sellers Rank | 8,795 in DIY & Tools ( See Top 100 in DIY & Tools ) 6 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 | | Maximum Operating Voltage | 240 Volts | | Measurement Type | Electrical | | Minimum Operating Voltage | 240 Volts | | Model Number | CP501 | | Power Source | Electric | | Product Warranty | 2 year | | Style Name | Classic | | Unit Count | 1.0 count | ## Product Details - **Brand:** Martindale - **Colour:** Blue - **Item weight:** 0.06 Kilograms - **Power source:** Electric - **Style:** Classic ## Images ![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - Image 1](https://m.media-amazon.com/images/I/61JnqbmHWCL.jpg) ![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - Image 2](https://m.media-amazon.com/images/I/51tQKwpyKWL.jpg) ![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - Image 3](https://m.media-amazon.com/images/I/511QconXEkL.jpg) ![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - Image 4](https://m.media-amazon.com/images/I/51UAe55+YEL.jpg) ![Martindale CP501 Classic Check Plug 240V Socket Tester, Blue - 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue](https://www.desertcart.ph/products/52874555-martindale-cp501-classic-check-plug-240v-socket-tester-blue) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-04-23*