CPAP Icon Logo
Account Info Icon
Mini Cart Icon 0
CPAP Logo
Account Info Icon My Account
My Favorites Icon 0
My Favorites
Mini Cart Icon 0
My Cart
Questions? 1-800-356-5221

Chat with a 5-star expert now!

Questions? 1-800-356-5221

Chat with a 5-star expert now!

  1. Home /
  2. CPAP Machines /
  3. CPAP Machine /
  4. Philips Respironics

M Series Pro C-Flex CPAP Machine

BY Philips Respironics  |  Item #DS400S
(52) Read Reviews

This item has been discontinued by the manufacturer.

Check out the newer model

Product image for ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)
ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)
1158 Reviews
$599.00 $1199.99 SHOP NOW

Prescription Required for Purchase

Need Replacement Parts or Accessories? Shop now

Get Your Sleep Back

Face Sleeping

Setup is easy & takes minutes

Truck Fast

Orders ship within hours (M-F)

Arrows Rotate

Resupply items set to autopilot

Item # DS400S

Not currently in stock

Product image for M Series Pro C-Flex CPAP Machine
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #1
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #2
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #3
M Series Machine - Filter View (Shown With Filter Installed)
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #5
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #6
Product image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #7
C-Flex Introduction Part 2
C-Flex Introduction Part 3
C-Flex Introduction Part 4
Overview of CPAP Power Cords and Power Supplies
Overview of CPAP DC Cables and Batteries
Click image to expand
Product Thumbnail Image #1 Product Thumbnail Image #2 Product Thumbnail Image #3 M Series Machine - Filter View (Shown With Filter Installed) Product Thumbnail Image #5 Product Thumbnail Image #6 Product Thumbnail Image #7
1/7
Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #1 Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #2 Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #3 M Series Machine - Filter View (Shown With Filter Installed) Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #5 Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #6 Product Image for M Series Pro C-Flex CPAP Machine - Thumbnail Image #7
1/7

M Series Pro CPAP Machine

The M Series Pro is a small and feature packed CPAP that looks more like a stylish clock radio than a CPAP.

It easily packs away in your carry on luggage, and has an incredible number of high-tech features, including the patented C-Flex comfort feature, and powerful clinical data features, on board.

This model is no longer available. For a suitable alternative, we recommend the DreamStation 2 Machine. The DreamStation CPAP is a quiet, sleek, and modern CPAP device. The DreamStation family of machines are only 25.8 decibels and are considered among the quietest on the market.

Looking for an auto-adjusting machine? Consider the DreamStation 2 Auto with Heated Humidifier, which combines automatic pressure adjustments with the comfort of humidification all for one low price.

M Series Pro CPAP Machine

The M Series Pro is a small and feature packed CPAP that looks more like a stylish clock radio than a CPAP.

It easily packs away in your carry on luggage, and has an incredible number of high-tech features, including the patented C-Flex comfort feature, and powerful clinical data features, on board.

This model is no longer available. For a suitable alternative, we recommend the DreamStation 2 Machine. The DreamStation CPAP is a quiet, sleek, and modern CPAP device. The DreamStation family of machines are only 25.8 decibels and are considered among the quietest on the market.

Looking for an auto-adjusting machine? Consider the DreamStation 2 Auto with Heated Humidifier, which combines automatic pressure adjustments with the comfort of humidification all for one low price.

Learn More About Your New Machine

The M Series Pro with C-Flex offers optional integrated humidification, Encore Pro SmartCard capability for advanced clinical reporting, lighted controls, an easy-to-read display and the comfort of C-Flex.

The M Series Pro sports a small, sleek device and case, a less obtrusive profile with tubing connected in the back and a "hidden" water chamber.

The Pro offers lighted primary touch controls for power, ramp, and C-Flex as well as a LCD display and controls for easy set up.

The humidifier controls have been simplified and now include an easy turn humidification dial. A water chamber that is easy to remove, fill and replace delivers continuous humidification throughout the night.

The M Series Pro is convenient for travel with or without the integrated humidifier. The standard travel carry case has been updated with additional compartments and sleek design.

Sound Level: 31-dB

Machine Dimensions: 7.5 in L x 5 in W x 3.1 in H

Machine Weight: 2.2

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

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.

The optional M Series Heated Humidifier is not included with this listing but can be purchased separately.

The optional Respironics EncoreViewer Software 1.0 and card reader are not included with this listing but can be purchased separately. The smart card and smart card writer are standard with this 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.

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 IntelliPAP 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.

CPAP.com Battery Kit with Universal 12 Volt DC Cable

The 2.5 lb CPAP.com Battery Pack is surprisingly small and lightweight. The lithium ion battery can be recharged at any discharge level without losing charge time due to battery memory loss. This battery has been approved by the United Nations and Department of Transportation as tested safe for travel. This battery kit comes with the CPAP.com battery and the 12 Volt DC Power Cord.

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 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
What is C-Flex?
C-Flex is a pressure relief feature that makes breathing back against CPAP pressure easier to do by reducing the pressure at the beginning of exhalation and returning to therapeutic pressure just before inhalation. Independent studies conducted by leading universities indicate that patient comfort, and therefore, patient CPAP compliance, is higher with machines that use C-Flex. C-Flex is a technology invented by Respironics, is proprietary, and is not available on other brands of CPAP machines.

An example of a machine with C-Flex technology is the DreamStation CPAP Machine.

C-Flex Easy Breathing Technology Visual Graph C-Flex Easy Breathing Technology Visual Graph

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

★★★★★

(52)  

Read Reviews

Compare Similar Products

M Series Pro C-Flex CPAP Machine

★★★★★
(52) $375.00 $375.00

Luna G3 CPAP Machine with Heated Humidifier

★★★★★
(5) $725.00 $999.00

AirSense™ 10 CPAP Machine with HumidAir™ Heated Humidifier

★★★★★
(44) $758.00 $758.00
Manufacturer
Philips Respironics
React Health
ResMed
Warranty
2 Years
2 Years
2 Years
Sound Level
31-dB
26 dBA
26.6 dBA
Quiet
-
Yes
Yes

Need a personal touch?

Icon for Chat with CPAP

Chat with CPAP

Questions about a product or an existing order? Start a chat and let us help you out.

Start a chat

Icon for Call us

Call us

M-F 8am-8pm
Sat 8am-5pm (CST)

 1.800.356.5221
CPAP.com Google Rating CPAP.com BBB Business Review

Customer Reviews

See what other customers are saying.

Overall Rating
★★★★★
4.6 52 Reviews
5  Stars 
36
4  Stars 
12
3  Stars 
1
2  Stars 
3
1  Stars 
0
Sort By
★★★★★

Outstanding machine

Verified purchase | Feb. 25, 2010 | Verified CPAP.com Customer
This machine replaces an older model (8yrs) and has shown to be a far superior product. I like the fact that it is in two pieces rather than one. This means that when I travel I can carry the lighter part with me in my carry on and pack the heavier power supply in the suit case. Also, the C-Flex feature makes this machine usuable all night (8hr) versus just a few hours a night without this feature. Without this feature the tendency is to not wear the mask all night. However, this C-Flex feature makes exhaling into the CPAP very easy and relaxing which allows me to wear it all night - and sleep! It is also proving to be a very quiet machine.
Was this helpful?
(0)
(0)
★★★★★

M Series Pro C-Flex CPAP Machine

Verified purchase | Jan. 25, 2010 | Verified CPAP.com Customer
The machine is nice and compact. Although quiet when you just plug the hole, it makes more noise when you actually use it with a humidifier - but not too bad. The unit is easy to operate and does the job with ease. The price is great from CPAP.com.
Was this helpful?
(0)
(0)
★★★★★

Easy to Use

Verified purchase | Jan. 17, 2010 | Verified CPAP.com Customer
Easy to set up and use. Push one button if you want to turn on and off. Fairly small footprint. Hose exits rear of unit which is nice. This is the 4th M Series Pro C-Flex I have owned. The first one lasted 18 months. Then in lieu of a new one under warranty the supplier (not CPAP.COM) sent me refurbished units. The first refurbished unit failed in 2 months and the second refurbished unit failed immediately. The supplier then sent a different brand but it didn't work here in the Colorado winter because the humidifier produces a warm mist that condenses too easily in the tubing when cold. That's why I went back to this unit. It produces more humidity at a lower temperature. I hope that this machine lasts.
Was this helpful?
(0)
(0)
★★★★★

A User Friendly Machine

Verified purchase | Dec. 19, 2009 | Verified CPAP.com Customer
I purchased this machine with humidifier. I'm replacing a M series plus machine with this model. This machine is software ready where my other model was not. I like the size and quietness of machine. Very easy to use this machine. I'm happy with purchase.
Was this helpful?
(0)
(0)
★★★★★

REM star PRO series M

Verified purchase | Sep. 26, 2009 | Verified CPAP.com Customer
The REMstar Pro series M CPAP machine works very well.The auto start feature works well unlike my previous machine. The smaller size is great for placement on a night stand and the adjustable humidifier is much nicer than having all or nothing for a choice. My only issue is that the blue lights for the control buttons give off more light at night than I care for. All things said I'm very happy with my purchase.
Was this helpful?
(0)
(0)
★★★★★

M series CPAP

Verified purchase | Sep. 02, 2009 | Verified CPAP.com Customer
Excellent Cust Svc assistance and very quick delivery on the product. Great job by the CPAP.com team
Was this helpful?
(0)
(0)

Customers Also Viewed

Product image for DC Converter 24V 90W For S9™ Machines
★★★★★
$84.95

DC Converter 24V 90W For S9™ Machines

Product image for Shielded DC Cord for DreamStation CPAP Machines
★★★★★
$29.95

Shielded DC Cord for DreamStation CPAP Machines

Product image for ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)
★★★★★
$599.00 $1199.99

ResMed AirSense™ 10 AutoSet™ CPAP Machine With HumidAir (Card-to-Cloud Version)

Related Searches