You can test the protection system to ensure the electrical safety of the home, perfect for protecting your safety from the risk of electric shock. Compact-size, light weight and convenient to use. Features: One-Click Leakage Testing: Socket tester for rapidly detecting whether the socket's wire connection is correct or not. With One-click test button, for correct wiring and trip function. Press the button, if the receptacle trip, that means the power leak-proof protection is good. It can test the protection system to ensure the household electrical safety,against the risk of electric shock. Real-Time Display: The outlet tester Features a display screen that provides real-time feedback on the status of your socket connections. You can view socket voltage details. The red LED indicators can be light up clearly even in strong sunlight or in the dark, making you read it fast. Easy to Use: The receptacle tester is very easy to use, and requires no technical knowledge or experience. Simply plug the tester into the outlet and read the results from the LED lights: open ground, open neutral, live/neutral reverse, live/ground reverse, open live & live neutral reverse. Portable Design: Socket leakage current tester is designed to be a durable tool that can withstand frequent use and handling. Outlet power tester is designed to be portable and compact. It can easily fit in your pocket or bag, so you can take it with you wherever you go. Be Sure Safety: Using a outlet checker is an important safety measure for anyone who works with electricity, from professionals to DIY enthusiasts. It helps to identify potential hazards and prevent electrical accidents, making it an essential tool for electrical safety. Be careful of using this function on normal receptacles. It may cause house wiring System to trip. Specifications: Plug: EU / US (optional) Color: Black / White (optional) Material: ABS RCD Current: RCD 30mA Scope of Application: 250V, 50Hz/60Hz Applicable Socket: 10A/16A convertible universal Digital Display Screen: LCD voltage measurement Applicable Crowd: Household, electrician, etc Item Size: 56 * 56 * 44mm / 2.20 * 2.20 * 1.73in Item Weight: 35g / 1.23oz Package Weight: 62g / 2.18oz Package Size: 5.8 * 5.6 * 6.9cm / 2.28 * 2.20 * 2.72in Package List: 1 * Socket Tester