Model: AC11 Smart Socket TesterWorking voltage: 2.6~3.3VTest voltage range: 0.1V~250V / 40~1kHzWorking temperature: 0°C~40°CWorking humidity: relative humidity 20%~75%Material temperature; -10°C~50°CStock humidity: relative humidity 20%~80%RCD current:> 30mARCD working voltage: 220V±20VBattery 2 * AAA battery (not included)Smart Socket Tester is mainly used to detect the polarity of the power socket and the safety of the leakage switch, which can quickly and accurately detect the wiring of the socket. The high-definition display screen can clearly see the screen value in a dark environment without fear of dark environment testing.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 1-3mm measuring deviation due to manual measurement.