Features: 1. Upgraded Electric Socket Tester-Advanced socket tester for rapidly detecting whether the socket's wire connection is correct or not. Compact size, light weight and convenient to use. With voltage backlight LCD display for testing voltage. 2. PLUG AND PLAY-This plug socket tester is designed with RCD/GFCI Test Button, One Click to know the working states of the leakage protector. Perfect for protect your security against the risk of electric shock. 3. LED Light Patterns-With easy to read indicators to indicate the states of the socket, easy to judge: Correct, Open Ground, Open Neutral, Live/Neutral Reverse, Live/Ground Reverse, Live/Ground Reverse, Missing Ground. 4. Bright LED Display-Light patterns are well labeled on the back of the device itself. The Red LED indicators can be light up clearly even in strong sunlight also be used in the dark, making you read it fast. 5. Wide Application-This electrical receptacle tester can be widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in school, laboratory, factory and other social field. Home improvement acceptances and safety inspection, it saves you lots of time in testing problems with sockets. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. 2. Objects may have Logo, if you want to know, please contact us. If you mind, please do not bid. Specification: Test socket voltage range: AC48-250V GFCI test: >5mA Voltage measurement (48V~250V/45-65Hz): yes LCD display: yes Backlight: yes Socket wiring test: Correct wiring method Missing ground Missing zero line Missing wire Reverse connection of live wire and ground wire Reverse connection of live wire and neutral wire Phase and ground wire is wrong and lacks ground Size: 65mmx62mmx58mm includes: 1 x Outlet Tester