Circuit Tester HT107D LCD Digital Display Socket Outlet Tester Mains Fault Check Tool Detector Electroscope 90 to 250V 00000

Feature:1. Advanced socket tester for quick detection of the correct electrical connection of the socket, it can test the protection system to make sure electrical safety at home.2. With LCD display, it can measure frequency, phase voltage (L_N) and leakage voltage (N_E) quickly and accurately.3. 7 LED light modes, there are 7 kinds of easytoread indicators to indicate the status of the socket, easy to judge.4. Widely used in electrical maintenance testing in schools, laboratories, factories and