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DreamStation Auto CPAP Machine System with A-Flex

Intelligent and refined the DreamStation Auto is an enhanced APAP machine that automatically adjusts pressure levels to ensure that you always receive the optimum pressure for successful sleep therapy.

DreamStation Auto's elegant graphical interface and large color LCD screen are matched with a host of advanced comfort and compliance features including A-Flex, EZ-Start, SmartRamp, OptiStart, built-in Bluetooth, and event detection and response.


  • Sleek, Modern Design with Full Color Display
  • Intuitive Graphics Based User Interface & Ambient Light Sensors
  • Advanced Auto-CPAP Algorithm Adjusts to Your Changing Needs
  • EZ-Start & SmartRamp Make Starting Therapy Easy for New Users
  • Optional Integrated Humidifier with Heated Tubing
  • Advanced Comfort Features & A-Flex Pressure Relief
  • Enhanced Compliance with Bluetooth & the DreamMapper App
  • FAA Approved & Travel Friendly

Sleek, Modern Design with Full Color Display: DreamStation's simple shape and full color display are a welcome change for sleep therapy patients used to bulkier, heavier, uglier device options. It is small and light with a modern, non-medical design that looks great on a bedside table, is user friendly, and fits easily in the included travel bag.

Intuitive Graphic User Interface & Ambient Light Sensors: DreamStation's graphic user interface was designed with feedback from patients and doctors so it is easy to use, intelligent and informative. The machine's a large navigation dial is intuitive and convenient; and the bright, front facing display uses simple menus, icons and labels that are easy to understand.

dreamstation lcd screen
DreamStation's settings can be adjusted while lying down or sitting up in bed and the machine's ambient light sensor adjusts display brightness automatically depending on light levels in the room.

Advanced Auto-CPAP Algorithm Adjusts to Your Changing Needs: The DreamStation Auto is an advanced APAP machine that monitors your breathing for flow limitations and adapts to them, automatically adjusting therapy throughout the night to ensure you're receiving the optimum pressure for a comfortable and successful sleep.

DreamStation Auto goes a step beyond traditional APAP therapy with Opti-Start. When Opti-Start is enabled DreamStation Auto will begin each therapy session at a pressure that is close to the previous session's 90% pressure, in order to reduce the likelihood of residual events at the beginning of a therapy session.

A Step Up, SmartRamp Makes Therapy Easy: In addition to the traditional pressure ramp available on most sleep therapy devices, DreamStation Auto offers SmartRamp for an easier experience at the onset of sleep. When SmartRamp is enabled the DreamStation Auto will monitor your therapy levels, during the ramp period, to deliver lower overall pressure until it detects an obstructive respiratory event. When an event is detected SmartRamp responds to resolve the event, raising pressures as required until the ramp period concludes.

Optional Integrated Humidifier with Heated Tubing: The DreamStation's Heated Humidifier is an elegant match to the DreamStation Auto's intelligent therapy offerings. The humidifier snaps securely onto the back of the DreamStation device to form a single integrated unit that can be setup and adjusted from the machine's primary LCD display.

dreamstation heated humidifier
In "Standard" mode the DreamStation Heated Humidifier acts like a typical heated humidifier, heating to the same pre-selected temperature level throughout the night. But the DreamStation Heated Humidifier can go beyond that with an "Adaptive" mode that delivers a precise, user selected, level of humidification at the mask throughout the night regardless of external factors like room temperature, flow rate, or external humidity. DreamStation Heated Tubing can also be added to provide extra protection from rainout and allow greater humidity levels than traditional non-heated tubing.

Advanced Comfort Features & A-Flex Pressure Relief: Philips Respironics's clinically-proven A-Flex pressure relief technology enhances traditional positive airway pressure therapy to improve comfort and increase compliance. Thanks to the advanced Digital Auto-Trak algorithm, that detects the onset of inspiration and exhalation, the DreamStation Auto delivers just the right amount of pressure relief, at the beginning and end of every breath, to provide a more natural breathing experience.

In addition to A-Flex, DreamStation Auto is equipped with Mask Fit Check tool to help with mask fitting, a Performance Check tool to ensure that your machine is working properly, EZ-Start adaptive therapy technology to help acclimate new sleep therapy users, and Auto On/Off capabilities to automatically start and stop therapy when a user puts on or takes off their mask.

Enhanced Compliance with Bluetooth & the DreamMapper App: The DreamStation Auto was built from the ground up to make therapy tracking and compliance easy and understandable for patients and doctors. Each device comes with Bluetooth built-in and an SD Data Card for data storage. After each sleep session the DreamStation displays a Sleep Progress report on the LCD screen. The Sleep Progress report shows nightly usage over the past 3 sleep sessions as well as summary data from the past 30 days. More detailed information is also available within the "My Info" section of the device or via the free DreamMapper App (iPhone, iPad & Android).

DreamStation Auto tracks, and adjusts therapy levels to respond to, many common OSA related events including Hypopneas, Flow Limitation, Respiratory Effort Related Arousal, Snores, and Leaks. In addition it can detect many symptoms beyond classic OSA -- such as clear airway apneas and periodic breathing -- that may indicate the need for specialized therapy.

FAA Approved & Travel Friendly: The DreamStation Auto is great for home, but it is FAA approved and built for travel as well. Without a humidifier it weighs just 3 lbs and fits easily in the supplied carry case or any overnight travel bag. DC power cord and battery options are also available for camping, air travel and boating.

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Manufacturer: Philips Respironics
Part Number(s): DSX500S11
GTIN Number(s): 00606959022461, 00606959022478, 00606959022485
In the Box: DreamStation Auto APAP Machine with Bluetooth, SD Data Card, Carrying Case, Filters (1 Foam Pollen and 1 Ultra Fine), 6-Foot Tubing, Printed Users Manual, Universal AC Power Supply with Cord, 2-Year Manufacturer's Warranty (APAP Only). Select Additional Tubing, Power, Humidification & Heated Tubing Options in Cart.
Warranty: 2-Year Manufacturer's Limited Warranty
HCPCS Insurance Code(s): E0601

Machine Operating Modes: CPAP, Auto-CPAP
Machine Pressure Range: 4 to 20 cm H2O
Machine Pressure Increment: 0.5 cm H2O
Machine Dimensions: APAP = 6.2 x 7.6 x 3.3 Inches; APAP with Humidifier = 11.7 x 7.6 x 3.3 Inches (Excluding Outlet Port) (Approximate)
Machine Weight: APAP = 1.56 Pounds; APAP with Humidifier = 3.02 Pounds; APAP with Humidifier, AC Power Supply & Cord = 4.37 Pounds (Approximate)
Tubing Compatibility: All 22mm Standard Tubing, All 15mm Slim Standard Tubing and DreamStation Heated Tubing (with Humidifier)
Operating Altitude: Sea Level to 7500 Feet
Operating Sound Levels: APAP = 25.8 dBA; APAP with Humidifier = 27.9 dBA (Average)
Filters: Reusable Foam, (Optional) Disposable Ultra Fine
Available Colors: White with Light Gray Highlights
Materials: Latex Free
Comfort Technologies: C-Flex, C-Flex+, A-Flex, Opti-Start
Pressure Ramp: SmartRamp with Event Detection; and Standard Ramp 0 to 45 Minutes
Pressure Ramp Start: 4 to Minimum Therapy Pressure Setting
Altitude Adjustment: Automatic
Automatic Start & Stop: Yes, Automatic On/Off with Mask Detection
Supplemental Oxygen Use: Compatible with O2 Adapter
Display: Color LCD Display with Ambient Light Sensor
Advanced Event Detection: Apnea Hypopnea Index, Flow Limitation, Respiratory Effort Related Arousal, Snore, Leak, Clear Airway Apnea, Obstructed Airway Apnea, Hypopnea, Periodic Breathing
Humidifier: (Optional) Integrated DreamStation Humidifier
Humidifier Dimensions: 5.75 x 7.00 x 3.25 Inches (Excluding Outlet Port)
Humidifier Weight: 1.46 Pounds
Humidifier Settings: 0 (Off) to 5 (Highest)
Humidifier Chamber Capacity: 325 mL to Max Fill Line
Humidifier Chamber Type(s): Long Life Dishwasher Safe
Humidifier Notes: When using the optional heated tubing additional settings are activated including: Humidification Mode = Fixed or Adaptive; Tubing Temperature = 0 (Off) to 5 (Highest)
AC Power: AC Power Supply with Cord
AC Power Input Range: Univeral 100-240 VAC, 50/60 Hz, 2.0-1.0 A
AC Power Supply Dimensions: 5.75 x 2.75 x 1.50 Inches (Approx)
AC Power Cord Total Weight: 1.20 Pounds (Approximate)
AC Power Cord Total Length: 9 Feet 6 Inches (Approximate)
DC Power: DC Power Cord (Optional)
DC Power Consumption: 12VDC, 6.67A
Data Storage: SD Data Card
Data Viewing: On Screen Sleep Progress Reports, (Optional) DreamMapper App
Data Included: SD Data Card > 1 Year; On-Board < 6 Months
Data Transmission Options: SD Data Card, Built-In Bluetooth, (Optional) Cellular Modem or WiFi Accessory
FAA Compliant Label Included on Base of Unit. This product is approved by the FAA for use on all commercial flights within the US and all international flights that depart or arrive in the US. Always contact your airline prior to your flight to confirm any requirements they may have -- such as a copy of your prescription or a letter of medical necessity -- for allowing your device on board.

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Customer Reviews

  • Best Customer Service Period. Love the Machine.

    After dealing with a company that my Doctor sent me to for a new machine and having the worst experience ever I returned the items and went back to cpapxchange and got this same machine for about $400 less. This machine is so much easier to clean and so much quieter than my others were. Love it. I had my others for 10 years and hope this lasts as long. Great product and I hung up from ordering knowing exactly what I was getting and how to use it. So easy to set up and use. I love the way the hose attaches to a swivel top. Great design. If you get this machine you will be happy with it. So will the person sleeping next to you.
    Written by dsnybuf, 2018-05-01

  • This machine is so quiet and easy. I am extremely satisfied.

    No problem with setup, very user friendly.
    Written by jtabar, 2017-12-23