Introduce A New GVDA Socket Outlet Tester Voltage Detector Electric Circuit Breaker Finder Ground Zero Line US EU UK Plug Polarity Phase Check

introduce a new GVDA Socket Outlet Tester Voltage Detector Electric Circuit Breaker Finder Ground Zero Line US EU UK Plug Polarity Phase Check
Advanced GVDA Socket Tester can help you check house wiring and connection polarity of socket, it can also use to test leakage tripping. It is a professional socket tester which rapidly detect whether the socket's wire connection is correct or not. With RCD/GFCI test function, it is more practical and safe.