HT106B Socket Outlet Tester Circuit Polarity Voltage Detector Wall US Plug Breaker Finder RCD Test US STOCK, FREE SHIPPING According to our customers' feedback, we have modified the errors in the product images. The "Correct" and "OPEN GROUND" are not the same code. Descriptions: Socket tester is mainly used for power socket wiring detection and RCD test. It can detect the wiring status of the socket quickly and accurately. With LCD, it can also measure the voltage of the socket and display it. Features: ? operating voltage: 48~250V/45~65Hz ? Measure voltage (with LCD): 48~250V/45~65Hz ? accuracy: (2.0%+2) ? operating temperature: 0C~40C ? operating Humidity: 20%~75%RH ? Storage temperature: -10C~50C ? Storage Humidity: 20%~80%RH ? Altitude: ?2000m ? RCD test: 30mA ? RCD working voltage: 220V20V ? GFCI test: 5mA ? GFCI working voltage: 110V20V Package Included: 1 x Socket Tester 1 x English User Manual