Feature AC10 socket tester are mainly used to detect polarity of power socket and safety of leakage switch. It can quickly and accurately detect the wiring of the socket.Simuitaneously, it can test the socket voltage and show on the LED screen. Specifications: Work voltage2.6~3.3V Test voltage range90V~250V/500~60Hz Work temperature0 C~40 C Work humidity20%~75%RH Stock temperature-10C~50 C Stock humidity20%~80%RH 20%~80%RH20%~80%RH RCD work Current>30mA RCD work voltage220V20V Battery2*AAA Batterywithout batteries Scope of application: 90-250V/50-60Hz Leakage detection: 10A/16A switching Multiple safety inspection Quick check in one second AC VOLTAGE MEASUREMENT COMPACT design more convenient to carry Triangle socket Leakage detection small and concenient phase error correction voltage display product detail Package List: 1 * AC10 Socket tester( without batteries ) 1 * User Manual Note Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.