Features: brand new and high quality 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. It can test the socket voltage and show on the LED screen. 10A/16A easy conversion to adjust 10A small appliances 16A large appliance sockets Display frequency one-key leakage detection, phase error correction, voltage display etc. Small size, easy to carry around. Specifications: Model: AC10 for Smart socket tester Work voltage: 2.6~3.3V Test voltage range: 90V~250V/500~60Hz Work temperature:0 C~40 C Battery: 2xAAA Battery(without batteries) Leakage Detect: 10A / 16A Plug Standard: US / EU Plug Note: Please allow 0-1 inch error due to manual measurement. Thanks for your understanding. Monitors are not calibrated same, item color displayed in photos may look slightly different from the actual item. Package includes: 1 PC x AC10 Socket Tester( without Batteries )