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PR System One REMstar Auto CPAP Machine with A-Flex

BY Philips Respironics  |  Item #DS550S
(139) Read Reviews

This item has been discontinued by the manufacturer.

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Item # DS550S

Not currently in stock

Shown with Humidifier. (Sold separately or with purchase of Bundle)
Shown with Humidifier. (Sold separately or with purchase of Bundle)
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #2
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #3
PR System One Series CPAP Machine - Filter View (Shown With Filter Installed)
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #5
Shown with Humidifier separated. (Sold separately or with purchase of Bundle)
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #7
Shown with Humidifier separated. (Sold separately or with purchase of Bundle)
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #9
Examples of pressure profiles delivered by the auto-algorithm over time.
A-Flex Easy Breathing Technology Visual Graph
Product image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #12
C-Flex Introduction Part 1
C-Flex Introduction Part 2
C-Flex Introduction Part 3
C-Flex Introduction Part 4
Differences Between 50 Series and 60 Series System One Machines
Overview of CPAP Power Cords and Power Supplies
Overview of CPAP DC Cables and Batteries
Click image to expand
Shown with Humidifier. (Sold separately or with purchase of Bundle) Product Thumbnail Image #2 Product Thumbnail Image #3 PR System One Series CPAP Machine - Filter View (Shown With Filter Installed) Product Thumbnail Image #5 Shown with Humidifier separated. (Sold separately or with purchase of Bundle) Product Thumbnail Image #7 Shown with Humidifier separated. (Sold separately or with purchase of Bundle) Product Thumbnail Image #9 Examples of pressure profiles delivered by the auto-algorithm over time. A-Flex Easy Breathing Technology Visual Graph Product Thumbnail Image #12
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Shown with Humidifier. (Sold separately or with purchase of Bundle) Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #2 Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #3 PR System One Series CPAP Machine - Filter View (Shown With Filter Installed) Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #5 Shown with Humidifier separated. (Sold separately or with purchase of Bundle) Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #7 Shown with Humidifier separated. (Sold separately or with purchase of Bundle) Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #9 Examples of pressure profiles delivered by the auto-algorithm over time. A-Flex Easy Breathing Technology Visual Graph Product Image for PR System One REMstar Auto CPAP Machine with A-Flex - Thumbnail Image #12
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PR System One Auto CPAP Machine

The PR Auto CPAP Machine with A-Flex is an intelligent solution that knows when, why, and how changes should occur to consistently and effectively provide optimum sleep therapy. New System One technologies like Humidity Control with Dry Box and Resistance Control for use with any mask, all are helping users achieve effective therapy.

NOTE: the Heated Humidifier is included in the price of this machine.

Looking to upgrade your Philips Respironics machine? Check out the DreamStation 2 CPAP

 

PR System One Auto CPAP Machine

The PR Auto CPAP Machine with A-Flex is an intelligent solution that knows when, why, and how changes should occur to consistently and effectively provide optimum sleep therapy. New System One technologies like Humidity Control with Dry Box and Resistance Control for use with any mask, all are helping users achieve effective therapy.

NOTE: the Heated Humidifier is included in the price of this machine.

Looking to upgrade your Philips Respironics machine? Check out the DreamStation 2 CPAP

 

Learn More About Your New Machine

The PR Auto with A-Flex includes a carrying case, travel bag, memory card, manuals and now comes packaged with the Respironics Performance Tubing.

System One Humidity Control

The PR CPAP humidifier and water chamber design are breakthroughs for managing rain-out and water damage. System One Humidity Control technology analyzes ambient temperature and patient airflow to reach relative humidity at the mask. Choose from 5 levels of relative humidity.

System One is the first humidifier in the industry which accounts for room humidity. Sensors inside and outside the CPAP machine closely monitor changes in humidity and prevents condensation from forming inside the tube.

Dry Box technology is another breakthrough in reducing water damage to the CPAP. Several unique designs are incorporated into the humidifier to prevent water from exiting the chamber. To start, the air outlet port has been moved from the side of the humidifier onto the top. This centers the entire delivery; minimizing the total water displacement around the hole. The water chamber is outfitted with one-way valve, between the machine and the humidifier. Any water that manages to escape the chamber gets trapped within the Dry Box, which acts as a reservoir for any water ingress past the valve.

System One and Dry Box Technology make it possible for the PR CPAP machines to be truly spill-free. This humidifier, even with a chamber filled to the "Full" indicator line, can be tilted, shaken, and even turned upside down without water leaking back into the device.

System One Resistance Control

Respironics wanted a machine to achieve optimal pressure no matter which mask is used. Resistance Control is the solution, a numbering system on all of Respironics CPAP masks based on variable resistance characteristics. Each number instructs the device to compensate for different mask types. The result? A consistent and reliable pressure enhanced with all the benefits of Flex Technology no matter which mask is used.

Advanced Event Detection

The PR Auto CPAP is designed to identify symptoms beyond classic OSA parameters such AHI, flow limitation, Hypopnea, Obstructive and Central Apnea. With the PR system, detection is expand to include data on Snoring, Periodic Breathing and Respiratory Effort-Related Arousals (RERAs).

RERAs differ from a Hypopnea event in that a RERA shows increasing respiratory effort with each breath, culminating in a shift in brain wave activity and not necessarily a result of obstruction. Periodic breathing conditions such as Cheyne-Stokes respiration and central apneas are distinguishable from obstructed apnea or snoring events.

Flex Family Technology

Flex Technology is designed to enhance traditional CPAP therapy; maintaining effective therapy at minimal pressures. Users new to CPAP equipment find the Flex feature provides airflow at just the right pressure relief for every breath and makes adapting to CPAP therapy easier. The PR Auto comes with both C-Flex and A-Flex modes as well as the new C-Flex Plus technology.

C-Flex offers a comfortable way to deliver sleep therapy by giving pressure relief at exhalation. Pressure is lowered based on a breath-per-breath analysis and provides up to 3 levels of relief based on the patient's expiratory flow.

C-Flex Plus is a new enhancement added to PR Pro and Auto CPAP machines. Similar to C-Flex, the technology provides pressure relief during exhalation based on expiratory flow. C-Flex+ minimizes the pressure transition and provides additional comfort when in fixed-CPAP mode. In addition, C-Flex+ softens the breathing cycle between inhalation to exhalation.

A-Flex is a comfort feature built on top of the REMstar Auto algorithm. If breathing events occur, the algorithm raises the A-Flex pressure profile to eliminate breathing events, while simultaneously making sure that pressure never rises to a level that's unnecessarily or uncomfortably high.

Encore Data Management and Reporting

On-board memory has been added to the CPAP as well as storing information on a generic SD Memory card and reads through any SD card reader. Use EncoreViewer Software to monitor therapy effectiveness through a series of reports. A new Patient Flow and Event report enables users to view a weekly breakdown on per-breath basis. Patient data is used to identify particular conditions and events with specific colors.

Another PR System One Machine Option

Interested in a system that includes a heated hose? The PR System One REMStar 60 Series Auto CPAP with Heated Humidifier and Heated Tube comes with the same great features as the System One Auto featured on this page. However, the 60 Series Auto also offers an updated humidifier and adds a heated hose to the system to provide optimum humidification for comfort and effective therapy.

Sound Level: 29 dB

Machine Dimensions: 7 in L x 5.5 in W x 4 in H

Machine Weight: 2.8

Machine Warranty: 2 Years

Default Machine Settings: 4-20cm H20

Humidification Available: Yes

Humidification Type: Integrated

Exhalation Relief: Yes

Ramp Mode: Yes

Max Altitude: 7500

DC Capable: Yes

Battery Option: Yes

Auto Altitude Adjustment: Yes

Auto Start: Yes

Auto Stop: Yes

Good For: [object Object]

CPAP.com always offers these services

  • 24 hour access to our CPAPtalk.com Support Forum
  • Learning Center for information on sleep apnea and cpap equipment
  • Consumer Purchasing Trends Reports
  • Warranty Services for all items purchased through CPAP.com
  • Insurance Compliant Invoices
  • Free Prescription Request System

Manufacturer Note

  • Philips Respironics products are for sale only to patients within the U.S. and not to other third parties or businesses.
  • All services provided by CPAP.com, including advertisement, ordering, sale, delivery, instruction, and setup of the products are performed solely by CPAP.com and independently of the manufacturer.
  • A valid prescription is required for the purchase of this product.

Respironics listened to the CPAP community and removed the "blue light" LED. The PR was placed in a dark room and the new power light could barely be seen. No more insomnia from excess system lights. The only common parts shared with the M series is the Power Supply. The PR system comes with a separate, external power brick and allows the overall CPAP to stay compact.

User Manual:

The user manual included with this machine can be viewed and downloaded here: REMstar Auto Machine.

Manufacturer Warranty
This machine comes with a 2 Year Manufacturer Warranty. CPAP.com will work with the manufacturer on your behalf if the machine needs repairs. Please follow these steps:

  • Contact us at cpap@cpap.com or 1-800-356-5221 to receive an RMA (Return Merchandise Authorization) Number before returning the equipment
  • Include a note with the machine describing the issue you are experiencing, along with your full contact information to include a return shipping address and the RMA number provided to you
  • Ship only the defective items to CPAP.com at 13235 N Promenade Blvd Stafford, TX 77477
  • Do not return accessory items such as the carry bag, hose or power cords
  • Email updates will be sent to keep you informed as the machine moves through the warranty process
  • CPAP.com will contact the manufacturer on your behalf and handle all shipping between us and the manufacturer
  • The repaired or replaced unit will be returned to you. Shipping charges may apply.

Please note: The manufacturer warranty is voided by water damage or misuse of the machine.

Humidifier Modes PR System One Heated Humidifiers Version 1.22 or higher have two modes:

  • Classic
  • System One Humidification

NOTE: The version of software installed on a machine is displayed on the screen when the unit is plugged into an outlet. The Humidification settings are displayed only when a PR System One Heated Humidifier is attached to the machine.

Classic Mode
The CPAP user who wants to control the heat setting on the humidifier should select "Classic" mode settings C1,C2, C3, C4 or C5. The "C" in front of the humidification setting indicates "Classic". This allows you to set the level of humidification.

System One Humidification Mode
The CPAP User who wants to allow the technology of the System One Humidification to set the level of humidification delivered based on the humidity present in the room air should select "System One Humidification". The humidification setting will show 1 - 5 but WITHOUT a "C" preceding the number.

Heating Off
If set to zero "0", the humidifier will act as a Passover Humidifier.

Accessing Humidification Settings:

  1. Humidifier must be attached to the machine
  2. Access the Set Up menu
  3. Scroll down the menu offerings to locate: "System One Humidification"
  4. If set to "On", the technology will set the amount of humidification delivered to the system based on the setting of 1 -5 with 1 being the least and 5 being the most
  5. If set to "Off", the user controls the heat setting based on C1-C5 with C1 being the lowest heat and C5 being the highest heat.
360
Universal Power

This system operates automatically between 110v and 240v AC. When traveling either inside or outside the USA, there are no switches to switch or fuses to change. The machine will automatically sense what voltage is needed and set itself to run on that power.

The user will need to adapt the plug that goes into the wall to fit the style of outlet socket that is being used. This is simply done with a Power Adapter Plug kit. This is the same type of plug adapter that would be used with a hair dryer or an electric shaver. World Traveler Power Adapter Plugs.

Universal 12 Volt DC Power Cord

This machine come equipped with a DC plug on the back of the unit. This allows the user to connect the CPAP to an external DC battery source. The machine can be powered by plugging the 12volt DC Power Cord into a cigarette lighter plug. This is ideal for traveling by car, boat, or recreational vehicle that is equipped with a cigarette lighter plug.

C-100 Travel Battery Pack for CPAP Machines

Weighing in at only 1.16 pounds the C-100 Battery is a terrific option for travel. Plus, the C-100 comes with a DC cable and connector peg suitable for use with the PR System One REMstar Auto CPAP Machine with A-Flex so no need to purchase a separate DC cable. This lithium ion battery meets UN Manual Test and Criteria requirements for travel. The C-100 Pack includes many accessories and a handy carry case designed to allow the the cords to be attached with the battery inside the case.

Respironics Battery Kit with Universal 12 Volt DC Cable

This portable battery pack is an external lead acid battery that is the ultimate in power, portability and convenience. This battery kit comes with the Respironics battery and the 12 Volt DC Power Cord (connects CPAP to cigarette lighter socket).
What does CPAP therapy do?
CPAP therapy provides a constant airflow which holds the airway open so that uninterrupted breathing is maintained during sleep. It is traditionally provided through a nasal mask that seals around the nose to maintain the pressure level.
Why might I prefer an APAP machine?
Some CPAP users find it more pleasant to breathe with an APAP than with CPAP. The pressure delivered by an APAP machine automatically changes as needed to deliver the minimal pressure required to maintain the airway. The pressure delivered by a CPAP machine is set to a single pressure, the highest necessary to keep the airway open as determined during the sleep study. This is the case even when the higher pressure is needed only a fraction of the time.
How do I choose the machine that is right for me?
We provide our customers with many tools to make informed decisions about their machine purchases. Options include:
How can I compare different machines?
We work very hard to provide many different ways for our customers to compare products. Here are the machine product guides we have created and maintain:
  • CPAP Machine Comparison Guide. This guide stacks up every CPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular CPAPs, or all CPAP machines we sell.

    Compare Most Popular CPAP Machines

    Compare All CPAP Machines

  • Auto Adjusting Machine (APAP) Comparison Guide. This guide stacks up every APAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular APAPs, or all APAP machines we sell.

    Compare Most Popular APAP Machines

    Compare All APAP Machines

  • BiPAP, VPAP and BiLevel Comparison Guide. This guide stacks up every BiPAP machine we sell, feature by feature. If you don't know the meaning of a feature, click the question mark for a definition. The links below will take you to the most popular BiPAPs, or all BiPAP machines we sell.

    Compare Most Popular BiPAP Machines

    Compare All BiPAP Machines
What comes with my machine?
Machines come with a six foot hose, power cord, at least one filter, and manuals. Most manufacturers include a carrying case which is designed specifically for their equipment. CPAP, APAP, and BiPAP machines do not come with a delivery system or mask. CPAP masks must be purchased separately.

To see the list of what specifically comes with each machine, you can Browse for a machine. Then on the product page, click the "Specs" tab to see a full list of what comes with the machine.

Which CPAP masks work on which machines?

Any mask will work with any machine, with one important exception. The ResMed AirMini is only compatible with certain ResMed CPAP masks. Compatible masks for the AirMini are as follows:

  • ResMed AirFit™ N20 Nasal Mask
  • ResMed AirFit™ F20 Full Face
  • ResMed AirTouch™ F20 Full Face
  • ResMed AirFit™ P10 Nasal Pillow

When considering another CPAP, APAP or BiPAP machine from ResMed or any other manufacturer, mask compatibility extends to all brands. The AirMini uses non-standard tubing to connect the machine to the mask, and is the primary reason why other masks won't work with the AirMini. Despite this issue, many of our customers consider the AirMini to be an excellent machine.

Are prescriptions required for mask, machine, humidifier, and EPAP purchases?

Yes. Federal law requires we have a valid prescription on file before we ship your mask, machine, humidifier, or EPAP therapy, including Provent and Bongo RX. You will also need a prescription to purchase the Nightbalance POSA device.


We provide many easy ways to get your prescription:

  • We can request your prescription for you! When you checkout, just let us know you would like us to request your prescription, or you can log into your account to have us request your prescription.
  • Fax your prescription to our toll-free fax number: 866.353.2727, or our international fax number: 713.541.7377
  • Email your prescription to cpap@cpap.com
  • Upload your prescription in your account, under the Prescriptions Section
  • Ask your doctor to fill out our prescription form. We have both a standard prescription form and an EPAP prescription form.


For more information on prescriptions, please see our Prescription Section of the Learning Center.


What does an APAP prescription need to say?
An APAP prescription must contain all of the following information:
  • One of the following words or phrases: "APAP", "AutoPAP", "AutoSet", "Auto CPAP", "Auto Adjusting CPAP", "Self Adjusting CPAP", "CPAP" or "Continuous Positive Airway Pressure" or similar term.
  • Your physician's contact information
  • Your physician's signature
  • The patient's full name

An APAP prescription may contain the following information:

  • Your pressure range (Optional, Not Required)
    • Example: 4-20 CM/H20
    • Example: 4-20
    • Example: 6-18 CM/H2O
    • Example: 6-18

CPAP prescriptions are accepted for Auto Adjusting (APAP) machines.

Here are some of our top selling APAP machines:

Transcend Auto miniCPAP™ Machine with EZEX
PR System One REMStar 60 Series Auto with Bluetooth
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
+ See More
What is ramp?
The ramp button on a machine is a feature that allows for a gradual pressure build-up to your prescribed pressure. The feature is enjoyed by those with high pressures because it eases up to their pressure.
What is exhalation relief?
Exhalation relief is a comfort feature which reduces the air flow at the time of exhalation, making the breathing process more natural.

The following are the different types of exhalation relief names by manufacturer.

  • Philips Respironics = C-Flex, C-Flex+, A-Flex and Bi-Flex
  • Resmed = EPR (Expiratory Pressure Relief)
  • 3B Medical = RESlex
  • Apex Medical = PVA (Pressure Variation Algorithm) Pressure Relief
  • Curative Medical = EUT (Expiratory Unloading Technology)
  • DeVilbiss = SmartFlex
  • Fisher & Paykel = SensAwake Technology
  • Human Design Medical = Z-Breathe
  • Somnetics = EZEX

Here are some machines with an exhalation relief feature:

Transcend Auto miniCPAP™ Machine with EZEX
PR System One REMStar 60 Series Auto with Bluetooth
AirSense™ 10 AutoSet CPAP Machine with HumidAir™ Heated Humidifier
+ See More

CPAP.com 100% Price Protection Guarantee

When you shop with us, we want you to be confident that you are receiving the best available price. If this items goes on sale or you spot an online or retail competitor with a lower price within seven days of your purchase, let us know, and we will credit you the difference.

"Super helpful, fast shipping, friendly assistance, great selection, I love this company."

- Verified Customer, 10/25/22

★★★★★

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Compare Similar Products

Manufacturer
Philips Respironics
ResMed
ResMed
Warranty
2 Years
2 Years
2 Years
Sound Level
29 dB
27 dBA
26.6 dBA
Quiet
-
Yes
Yes

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★★★★★

Great machine but not as good as the new PR System One Remst

Verified purchase | May. 01, 2014 | Verified CPAP.com Customer
This machine mirrors the new heated tube Remstar System 1 PR 60 machine but without the heated tube, and is slightly noisier.
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★★★★★

Love the Size and Quiet

Verified purchase | Dec. 17, 2013 | Verified CPAP.com Customer
Although I've had this machine awhile, I really love how small it is and how much quieter than my old CPAP model. I purchased the reservoir, too, and CPAP.com installed it for me before shipping. It's really easy to change the filters and remove the data card for doctor visits.
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★★★★★

Great machine

Verified purchase | Nov. 02, 2013 | Verified CPAP.com Customer
Relatively quiet. Has been a great machine. The water tank is a bit odd shaped so you might want a small brush to get to the little nooks.
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★★★★★

Works well!

Verified purchase | May. 20, 2013 | Verified CPAP.com Customer
I really like this product. It is easy to work with and it adjusts nicely when I roll over from my side to my back (ramping up the pressure when I need it). I can make a number of adjustments to make the experience of using a cpap more comfortable.
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★★★★★

User-friendly

Verified purchase | Sep. 27, 2012 | Verified CPAP.com Customer
This auto cpap machine has a very easy to use setup and monitoring screen making it simple to adjust to individual preferences. The humidifier is now included at no extra charge. Unfortuanately, my first unit failed shortly after the 2 year warranty ran out! I did like it enough to puchase a second unit-if that tells you anything.
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★★★★★

Quiet & Comfortable

Verified purchase | Sep. 27, 2012 | Verified CPAP.com Customer
This machine is not only the most quiet I've ever had, it is also the most comfortable from the standpoint that the A-Flex feature provides an extremely smooth transition from resistance during inhalation to breathing ease during exhalation.
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