LCD Display Full-Screen Digital Meter for 30V-250V Outlet RCD Test Plug Automatic Electrical Polarity Circuit Voltage Sensor Home Breaker FinderFeature:1. An advanced and easy-to-use socket meter. Intelligently measure whether the connection wires of the socket are correct or not. And with a full-backlit screen, it can clearly display different wiring status even in dark environments. And small size, light weight, very easy and fun to use process.2. AC voltage measurement. The 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 status of the leakage protection. Ideal for protecting your safety from the risk of electric shock.4. Data storage function. Convenient for recording voltage at different times or in different environments, up to 20 groups can be stored.5. Wide range of applications. Widely used in schools, laboratories, factories and other social areas electrical maintenance testing, office outlet testing, power board testing, wall mount outlet. Home decoration acceptance and security inspection, saving a lot of time to detect socket problems. Specification:Voltage Measurement (EU/UK Plug): 30V - 250V Voltage Measurement (US Plug): 30V - 120V RCD (EU/UK Plug): gt; 30mA Operating Voltage RCD: 220V 20VTest RCD (GFCI US Plug): gt; 5mA Working Voltage RCD (GFCI): 110V 20V Cabling Judgment Status: Seven Kinds Display: Full LCD Backlight Status Indicator: Red & Green Storage Date: 20 Groups Low Battery Indication: YesWorking Temperature: 0C-40C Material: 2*CR2032 (Not Included)Material: ABS + Electronic Components Size: 68*50mm/2.68*1.97in Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measurement deviation due to manual measurement. 1 X Socket Detector