NEW MODEL LAUNCH!! The new Metravi ST-09B is an advanced, electrical socket tester for rapidly detecting whether the socket’s wire connection is correct or not. With RCD test function, it is also a practical and safe device. Widely used for electric maintenance testing, office sockets testing, power strips testing and wall sockets testing in schools, laboratories, factories, etc. It is a conveniennt and smart meter and saves time in testing problems with sockets. Designed with a RCD/GFCI Test Button for help with correct wiring and RCD/GFCI trip function. It can test the protection system to ensure electrical safety. Perfect tool for eliminating the risk of electric shocks. The pocket-size, portable design is compact, light weight and convenient to use and features a large, backlit LCD display. It is easy to use and helps detect whether neutral, live and earth wire is connected correctly and indicates which wire is missing with clear light patterns. Need to check the wiring of the house and check the polarity of the socket connection? Need to test leakage tripping? Try the new Metravi ST-09B Socket Tester. Features: Large, back-lit, high-definition display Socket sequence test Three hole socket Line Neutral Earth (L-N-E) detection Phase Voltage (L_N) measurement Leakage Voltage (N_E) measurement RCD Test Change in the display back-lit colour indicates problems Automatic shutdown Data Hold