Meterk Advanced RCD Electric Socket Tester Automatic Neutral Live Earth Wire Testing Electric Circuit Polarity Detector Wall Plug Breaker Finder Electric Leakage Test Always need to check the wiring of the house and check the polarity of the socket connection? Need to test leakage tripping? Try our Meterk Socket Tester. It is a professional socket tester which rapidly detect whether the socket's wire connection is correct or not. With RCD test function, it is more practical and safe. Features: Electric Socket Tester - Advanced socket tester for rapidly detecting whether the socket's wire connection is correct or not. Design with RCD Test Button - Power outlet socket for correct wiring and RCD trip function. It can test the conservation system to ensure the household electrical safety. Perfect for protect your security against the risk of electric shock. Easy e - Detect whether neutral, live and earth wire is connected correctly and to indicate which wire is missing with clear light patterns. Bright LED Light & 3 Test Indicators - The light patterns are well labeled on the surface of the socket tester. The tester adopts a built-in light so it can also be used in the dark. Easy and fast to read the test result. 7 LED Light Patterns - With 7 easy to read indicators to indicate the state of the socket, easy to judge: Correct, Open Ground, Open Neutral, HOT/Neutral Reverse, HOT/Ground Reverse, Open Hot, Live Neutral Reverse. Wide Application - Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, factory and other social field. It saves you lots of time in testing problems with sockets. Portable Design - Compact size, light weight and easy e. Note: 1.Socket tester display "Correct" only means the pole is connected correctly, but does not mean resistance value is passed designation standard. 2. Only passing "Creeping Switch Test", it can finally obtain the earth resistance value to test whether the conservation System works well or not. 3. To ensure your safety, don't make the insert out of shape to affect the test result. Forbid testing in public without permission. 4. Turn off the electrical appliances before you checking the power conservation systems to ensure no harms. Specifications: Brand Name: Meterk Color: Black Material: Flame Retardant ABS Plug Type: EU / US / UK (Optional) Voltage: 220V-250V(EU) / 90V-120V(US) / 220V-250V(UK) 50-60Hz RCD Test Current: 30mA Working environment: -20℃ ～ +60℃ Earth resistance meets the standard Item Size: 55 * 60 * 55mm / 2.17 * 2.36 * 2.17in  Item Weight: 55g / 1.93oz Package Size: 7.5 * 7.5 * 7.5cm / 2.95 * 2.95 * 2.95in  Package Weight: 88g / 3.10oz Package List: 1 * Socket Tester 1 * User Manual (English + French + German + Italy + Spanish)