House wiring and receptacle connection polarity, also available For testing leak tripping. professional socket A tester that quickly detects whether the socket is wired or not Is the connection correct. With RCD/GFCI test function, It's more practical and safer. feature: Portable Electrical Outlet Tester --- Advanced Outlet A tester that quickly detects whether the socket is wired or not Is the connection correct. Small size, light weight, easy to use. LCD display with voltage backlight Test voltage. Plug and Play --- Designed with RCD/GFCI test button, One-click to understand the working status of the leakage protector. Perfectly protects your safety from the risk of electric shock Shock. Bright LED display --- light pattern well marked The back of the device itself. Red LED indicator can be Can be used for clear lighting even in strong sunlight Dark, allows you to read quickly. 6 LED light patterns --- with 6 easy-to-read indicators Indicates the state of the socket, easy to judge: correct, open space,space, live/neutral reverse, Live/Ground Reverse, Live/Ground Reverse, Missing ground. Wide range of applications - widely used in electric Repair Testing, Office Outlet Testing, Power Strips Tests and wall socket tests in schools, laboratories, factories and other areas of society. home improvement Acceptance and safety inspection, saving you a lot Time to test for socket problems. Colour: Black Model: (US)(EU)(UK) (optional) Material: flame retardant ABS Working voltage: 90~250V Packing list: 1 * Electric socket tester