Standard atmospheric condition: Operating temperature range : -25 ~85 Celsius Storage temperature range : -25~ 80Celsius Rated voltage: DC 50V Rated current: DC 0.5A Humidity range: 95%RH MAX Unless otherwise specified ,the standard range of atmospheric conditions for masking Measurements and tests are as follows: Ambient temperature: 5~35Celsius Relative humidity: 45%~85% Air pressure: 86 KPa~106 KPa AV socket, electrical outlet, speaker socket