New Generation Full Screen Socket Tester Ground Zero AC Voltage Tester 30V-250V RCD Test Plug Polarity Phase Check EU/US/UK Features Description 1. Advanced and easy-to-use socket tester. Quickly and intelligently measure whether the socket connection line is correct. 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 proce 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 protect your security against the risk of electric shock. 4. Data storage function. It is convenient to record the voltage at different times or in different environments, and it can store 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, factory and other social field. Home improvement acceptance and safety inspection,It saves you lots of time in testing problems with sockets. Specification Voltage Measuring (EU/UK Plug): 30V~250V Voltage Measuring (US Plug): 30V~120V RCD Test (EU/UK Plug): >30mA RCD Working Voltage: 220V20V RCD(GFCI US Plug) Test: >5mA RCD(GFCI) Working Voltage: 110V20V Wire Connection Status Judge: Seven types Display: Full Backlight LCD Screen Status Indicator Light: Red and green Date Storage: 20 Groups Low Battery Indicator: YES Operating Temperature: 0 ~ 40 Battery: 2*CR2032 (Not included) Items in the Package 1 * Socket Tester 1 * User's Manual 1 *Kraft box