Electric - Advanced for detecting whether the socket's wire connection is or not.Design with Test Button - Power outlet socket for wiring and trip function. It can test the protection system to the household electrical safety. Perfect for your security against the risk of electric shock.Easy to Use - Detect whether neutral, live and earth wire is connected correctly and to indicate which wire is missing with clear light patterns. LED Light & 3 Test Indicators - The light patterns are labeled on the surface of the . The tester adopts a built-in light so it can also be used in the dark. Easy and fast to read the test .7 LED Light Patterns - With 7 easy to read indicators to indicate the state of the socket, easy to : , Open Ground, Open Neutral, Live/Neutral Reverse, Live/Ground Reverse, Open Live & Live Neutral Reverse.Wide Application - Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, and other social field. It saves you lots of time in testing problems with sockets.Portable Design - Compact size, light weight and convenient to use. With voltage backlight LCD display for testing voltage.Plug Type: US Plug, it applies to Canada, , Mexico, Thailand, Taiwan, the , the Philippines and so on.Voltage: 48V-250V 45-65HzGFCI Test: 5mA (US Plug)GFCI Working Voltage: 110V20VVoltage Measurement: 48V~250V / 45~65HzAccuracy: (2.0%+2)Working Environment: 0 ~ 40, 20% ~75%RHStorage Environment: -10 ~ 50, 20% ~80%RHSafety Rating: EN61010-1,-2-030, EN61326-1, II 300VColour:blackMaterial:ABSSize:about 62 x 65 x 55mmPackage Contents:1X 1X English manualOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.