multimeter 1.CCC CE approved 2.AC input and AC output ... )MeasuringaccuracyVoltage,current±(0.5%FS+digital)Frequency±0.1HZSourceScopeAC 220V±10%,0/60HZConsumption<5VASafetyWithstand voltage>2KV 50HZ/1minInsulating resistanceAny two of ... input,output ,source,dasing>20mΩEnvironmentTemperatureOperation:-10—50°C Storage:-25—70°CHumidity≤85%RH,free of wet and corroslvegasElevation≤3000m multimeter