Order # 55005709 Manufacturer# DV55D-HH Brand IntelliPAP Manufacturer Drive Medical Application CPAP System UNSPSC Code 42272213 Bilevel provides two levels of pressure that change between inhalation and exhalation Whisper-quiet operation _ 26 dBA! SmartFlex Exhilation Technology included Fits easily into the home environment and carry-on luggage Includes discreet carry bag that can be easily expanded to hold additional accessories Auto on/off automatically starts the flow of air after breathing into the mask and stops the flow of air when mask is removed Delay pressure ramp eases the machine to the prescribed pressure _ allowing the user to fall asleep at a lower pressure (0-45 minutes in 5-minute increments and .5 increments for pressure)