Need to check house wiring and verify socket connection polarity? Need a bump test leak? Try our socket tester. It is a professional price tester which quickly detects whether the wire connection of the socket is correct or not. With RCD test function, it is more convenient and safe. Features: Electrical Prize Tester - advanced socket tester to quickly detect whether the wire connection of outlet is correct or not. RCD/GFCI Test Button Design - Prize of power outlet for easy wiring and RCD/GFCI tripping function. It can test the protection system for household electrical safety. safety against the risk of electric shock. Easy to use - detect if neutral, live wire and earth is correctly connected and indicate which wire is missing with clear light patterns. LED Display - With easy to read indicators to show socket status, easy to judge: Good, Open Ground, Open Neutral, Live/Reverse Neutral, Live/Reverse Ground, Open Live & Live Neutral Reverse.< /p> Bright LED Light & 3 Test Indicators - The light patterns are well marked on the surface of the socket tester. Wide Application - Widely used for testing electrical maintenance, office test sockets, power strips and test wall sockets test in school, laboratory, factories and other social field. time testing socket issues. Portable Design - Compact size, light weight and convenient to use. With voltage backlight display for testing voltage. Features: Black color < p>Material: ABS Plug Type: EU Voltage: 100V-240V, 50/60Hz Current RCD tripping: 30mA RCD voltage: 220V20V GFCI Tripping Current: >5mA GFCI Voltage: 110V20V Voltage measurement: 90V~250V, 50/60Hz Working environment: 0~40, &lt;80% relative humidity Safety Note: EN61010-1, 12-030, EN61326-1 Item size: approx. 80*63*46mm / 3.15*2.48*1.81in Weight Item Weight: approx. 53g / 1.87oz Package Size: approx. 9 * 8 * 7.5cm / 3.55 * 3.15 * 2.95in Package Weight: about 83g / 2.94oz Package List: 1 * Plug Tester 1 * User Manual (English) Note: The data is all measured manually, please allow 1-3cm error, due to the light and display difference , there will be a certain color difference, the actual object received shall prevail.