1. Advanced and easy-to-use . Quickly and intelligently measure whether the socket connection is . And through the fully backlit screen, various wiring status can be clearly displayed, even in a dark environment. Moreover, it is small in size and light in weight, and the use process is very easy and pleasant.2. AC voltage measurement. AC voltage can be accurately measured and displayed on the screen in real time. The measuring range is 30V-250V.3. Designed with RCD/GFCI Test Button, One Click to know the working state of the leakage protector. Perfect for your security against the risk of electric shock.4. Data storage function. It is convenient to record the voltage at different or in different environments, and it can up to 20 groups.5. 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. acceptance and safety inspection,It saves you lots of time in testing problems with sockets.Plug Type:UK plug,it applies to , the United Kingdom and so on.Voltage Measuring: 30V~250VRCD Test: 30mARCD Working Voltage: 220V20VWire Connection Status : Seven typesDisplay: Full Backlight LCD ScreenStatus Indicator Light: Red and greenDate Storage: 20 GroupsLow Battery Indicator: YESOperating Temperature: 0 ~ 40Battery: 2*CR2032 (Not included)DIY Supplies:ELECTRICALDisplay Type:Digital OnlyDimensions:About 82 x 65 x 80mmPower Supply:BatteryOperating Temperature:0 ~ 40Model Number:FY1881color:BlackMaterial:plasticPackage Contents:1 x Only 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.