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The REMstar Auto is Philips Respironics premier CPAP machine combining advanced
A-Flex comfort features with auto-adjusting positive airway pressure to provide an
exceptional experience tailored to fit your individual sleep therapy needs.
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PR System One REMstar Auto - DS550HS

System Overview

The REMstar Auto A-Flex is a CPAP (Continuous Positive Airway Pressure) device designed for the treatment of Obstructive Sleep Apnea (OSA). It can deliver CPAP therapy or Auto-CPAP therapy.

When prescribed for you, the device provides several special features to help make your therapy more comfortable. The ramp function allows you to lower the pressure when you are trying to fall asleep. The air pressure will gradually increase until your prescription pressure is reached. You also have the option of not using the ramp feature at all.

Additionally, the C-Flex, C-Flex+ and A-Flex comfort features provide you with pressure relief when you exhale during therapy.

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Detailed Specifications

General Specifications
  • Manufacturer : Philips Respironics
  • Part Numbers : DS550HS
Dimensions & Weight (Approximate)
  • APAP : 7" L x 5.5" W x 4" H
  • APAP : 3 lbs
  • APAP with HUMIDIFIER = 7" L x 10.75" W x 4" H
  • APAP with HUMIDIFIER = 4.8 lbs
  • Power Supply = 4.5" L x 2.5" W x 1.75" H
  • Power Supply = .75 lbs
Performance & Power Characteristics
  • Universal Power Supply : Input Range 100-240 V, 50-60 Hz
  • Average Sound Level : Less than 30 dBA
  • Pressure Range : 4cm to 20cm H20 (1 cm H20)
  • Ramp Time : 0 to 45 minutes (5-min increments)
  • Ramp Start Pressure : 4 to Min Pressure (User adjustable)
  • Altitude Compenstation : Automatic
  • Comfort Technologies : C-Flex, C-Flex+, A-Flex
  • Leak Compensation : Automatic
  • Heated Humidifier : Optional System One Humidifier
  • Auto On/Off : Yes
  • Data Display on Device : Compliance Visual Inspection Compliance, 7 and 30-day averages
  • Data Storage, Detection & Reporting (SD Card more than 1 year) : Hours of Use, Visual Inspection Compliance, Apnea Hypopnea Index, Flow Limitation, Respiratory Effort Related Arousal, Snore, Leak, Clear Airway Apnea, Obstructed Airway Apnea, Hypopnea, Periodic Breathing
  • Event Response : Flow Limitation, Respiratory Effort Related Arousal, Snore, Leak, Obstructed Airway Apnea, Hypopnea
(Optional) Heated Humidifier Characteristics
  • Water Capacity : 1 1/3 cups (325ml) at recommended water level
  • Heater Settings : 1 to 5 (104 to 158 F / 40 to 70 C)
  • Universal Power Supply : Direct power via CPAP/BiPAP connection

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