Device Size Dimensions: 170 mm × 180 mm × 118 mm, or 290 mm × 180 mm × 134 mm (with the humidifier) Weight:1.5 kg, or 2.5 kg (with the humidifier) Product Use, Transport and Storage Operation Transport and Storage Temperature: 5°C to 35°C (41˚F to 95˚F) -25°C to 70°C (-13˚F to 158˚F) Humidity: 15% to 93% Non-condensing 15% to 93% Non-condensing Atmospheric Pressure: 760 - 1060 hPa 760 - 1060 hPa Mode of Operation Continuous Work Mode CPAP, Auto SD Card The SD card can record patient data and fault information. AC Power Consumption 100 - 240 V AC, 50 / 60 Hz, 2.0 A max Main Device offer to USB Communications Port 5 V 2.0 A Main Device offer to Humidifier 24 V 1.5 A Type of Protection Against Electric Shock Class II Equipment Degree of Protection Against Electric Shock Type BF Applied Part Degree of Protection Against Ingress of Water IP22 Pressure Range 4 to 20 hPa (in 0.5 hPa increments), ≤30 hPa under single fault conditions. Pressure Display Accuracy ±(0.5 hPa＋4%) Static Pressure Stability ±0.5 hPa Ramp The ramp time ranges from 0 to 60 minutes. Sound Pressure Level < 30 dB, when the device is working at the pressure of 10 hPa. Sound Power Level < 38 dB, when the device is working at the pressure of 10 hPa.