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PR System One REMstar Pro CPAP Machine with C-Flex Plus

BY Philips Respironics  |  Item #DS450S
(31) Read Reviews

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Item # DS450S

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C-Flex Introduction Part 2
C-Flex Introduction Part 3
C-Flex Introduction Part 4
Introduction to Sleep Apnea
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
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PR System One Pro CPAP Machine

Respironics introduces "System One" and C-Flex Plus through a new line of CPAP machines. The PR Pro CPAP machine is an intelligent solution that provides the highest level of comfort. 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.

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

PR System One Pro CPAP Machine

Respironics introduces "System One" and C-Flex Plus through a new line of CPAP machines. The PR Pro CPAP machine is an intelligent solution that provides the highest level of comfort. 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.

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

Learn More About Your New Machine

Respironics introduces "System One" and C-Flex Plus through a new line of CPAP machines. The PR Pro CPAP machine is an intelligent solution that provides the highest level of comfort. 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. The PR Pro comes standard with carrying case, bag, memory card, manuals and now packaged with the Respironics Performance Tubing.

System One Humidity Control (optional)

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.

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.

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 Plus minimizes the pressure transition and provides additional comfort when in fixed-CPAP mode. In addition, C-Flex Plus softens the breathing cycle between inhalation to exhalation.

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.

Sound Level: 29 dB

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

Machine Weight: 2.3

Machine Warranty: 2 Years

Default Machine Settings: 4-20cm H20

Humidification Available: Yes

Humidification Type: Integrated

Exhalation Relief: Yes

Ramp Mode: Yes

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
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  • Warranty Services for all items purchased through CPAP.com
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  • 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 CPAP 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 Pro CPAP Machine with C-Flex Plus 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.
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.

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.

Do all CPAPs use filters?
Yes, all CPAPs use at least one filter that is usually a type of foam material and washable. Some CPAPs offer finer filtration with the addition of a disposable paper filter.

Cleaning and changing filters is the only maintenance required for a CPAP machine.

The filters are located at the back of the machine at the air intake.
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 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
What are the CPAP, BiPAP, Sleep Apnea, and Oxygen related HCPCS, CPT or billing codes?

E1399 is Miscellaneous and is used for other CPAP and Oxygen items.
What does a CPAP prescription need to say?
A CPAP prescription must contain all of the following information:
  • One of the following words or phrases: "CPAP" or "Continuous Positive Airway Pressure"
  • Your physician's contact information
  • Your physician's signature
  • The patient's full name
  • Your specific pressure setting:

    • Example: 9 CM/H2O
    • Example: 9
    • Example: 14 CM/H2O
    • Example: 14

Here are some of our top selling CPAP machines:

XT Fit CPAP Machine
PR System One REMStar 60 Series Pro CPAP Machine with Bluetooth
Transcend© miniCPAP™ Machine
+ 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
React Health
ResMed
Warranty
2 Years
2 Years
2 Years
Sound Level
29 dB
26 dBA
26.6 dBA
Quiet
-
Yes
Yes

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Customer Reviews

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★★★★★

Kept me awake

Verified purchase | Apr. 05, 2017 | Verified CPAP.com Customer
Over the course of a couple of months (in early 2012), I used two of these machines. Each was returned due loud whistling noise they made. The sound was loud enough to wake me up out of a sound sleep!
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★★★★★

Much Better Than Previous Model

Verified purchase | May. 08, 2012 | Verified CPAP.com Customer
I purchased this new PR System One CPAP machine to replace the previous old model I have had for several years...the REMstar Pro with C-flex. This new machine is much better than my old one. It is smaller, lighter, easier to operate, and has many more features than the previous model. The C-flex+ may take some getting used to as it is a bit different than plain C-flex, but I find that I now prefer it as it does seem to make my breathing easier. The SD card is a great improvement over the old cardboard data storage cards and stores a huge amount of data. It is also easier to access the data as it can be read by any SD reader. The new Performance Tubing that comes with this machine is also better than the old tubing. It is lighter and does not pull on the mask during sleep as much as the old heavier tubing did. I connect two of these 6-foot long tubes together into one 12-foot long piece so I can keep my CPAP machine on a small stool at the foot of my bed. The machine is so quiet I can barely hear it from there. The Heated Humidifier works exactly as advertised and has several different heat settings to choose from so I don't have to keep the heat in my house turned up as high during the night to keep the air from freezing my nose. The humidifier also automatically reads the amount of humidity in the room and adjusts its output accordingly. There is virtually no rain-out in my mask or tubing. Overall, and excellent CPAP machine at a very reasonable price. 5-stars+++
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★★★★★

Verified purchase | May. 06, 2012 | Verified CPAP.com Customer
Excellent Machine and is very user friendly. This machine exceeds my expections and cpap.com does a good job on their follow up to see if you have any question or need help.
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★★★★★

What a miracle

Verified purchase | Apr. 04, 2012 | Verified CPAP.com Customer
Small, quiet and wonderful--it's great to get a good night's sleep again after several weeks of a gradually fading CPAP!
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★★★★★

Pr system

Verified purchase | Mar. 27, 2012 | Verified CPAP.com Customer
It is great improvement over my old system. Quiter
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★★★★★

Verified purchase | Mar. 23, 2012 | Verified CPAP.com Customer
Convenient size, great for travel!
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