Feature:1. LCD display with backlight display, display voltage and frequency.2. Plug and play, no battery required. Onekey detection circuit safety.3. Widely used in schools, laboratories, factories and other fields.4. Easy to use, overall nonslip design, comfortable hand feeling.5. Compact size, lightweight and convenient, easy to carry and store.Specification:Item Type: Socket TesterMaterial: ABSColor: As shown in the pictureModel: ET89EUPlug: EU AC220V-250VApplication: Socket testBasic Parameters:Measuring Voltage Range: 90-250V or 45-65HzWorking Current of the Whole Machine: andlt 3mA (in non-RCD state)Accuracy: (2.0 percent and5)Working Temperature: 0-40Working Humidity: 20 percent -75 percent RHStorage Temperature: -10-50Storage Humidity: 20 percent -80 percent RHAltitude: 2000mRCD Current: andgt 30mALCD Working Voltage: 220V20V.Package List:1 x Socket Tester1 x Instruction Manual