HT107 Digital Display Socket Tester Pro Voltage Test RCD 30mA Socket Detector Zero Line Plug Polarity Phase Check Cable Tester Product selling point: 1. Smart socket tester: used to detect the wiring of sockets and ensure the safety of household electricity. 2. Reliable quality and high performance: ensure accurate and fast results. 3. Digital LCD display: The test results are directly displayed on the LCD screen, which is clear and easy to see, and there is no need to judge by yourself. 4. Voltage and frequency test: The voltage and frequency are displayed at the bottom of the LCD screen at the same time. 5. Other features: small size, light design, key operation, easy to use, plug and play. 6. Application: Useful tool for testing sockets in homes, offices, schools, factories, etc. Product parameters: Material: ABS Colour: Black Plug type: EU plug US plug and UK plug (optional) Packing weight: 100g.3.53oz Packing size: 10*10*10cm Packing list: 1*Socket Tester 1*Manual Note: 1. Manual measurement, allow a small error of 0-1cm, thank you. 2. Due to the differences between monitors, the pictures may not reflect the actual color of the item. Please allow a small color difference.