ResMed S9 90W Power Supply Unit (PSU)

Ensure your sleep apnea therapy remains fully operational with the genuine ResMed 90W Power Supply Unit designed specifically for the S9 series CPAP and BiPAP machines. Whether you are replacing a damaged power adapter or setting up a dedicated secondary power source for travel, this high-capacity unit delivers steady, regulated voltage to your device.

The 90W configuration provides the necessary electrical output to run both your S9 base therapy machine and the integrated H5i™ heated humidifier simultaneously, ensuring you can run full Climate Control humidification features without power drops.

Key Features:

• Humidifier & Heated Tube Support: Unlike lower-wattage travel packs, this heavy-duty 90W capacity supply provides the robust electrical output required to power the H5i™ heated humidifier and ClimateLine™ heated tubing alongside your machine.  
• Global Voltage Adaptability: Supports an automatic universal input range of 100–240V (50–60Hz). This allows you to power your S9 device anywhere in the world by simply connecting the appropriate local wall adapter cable.
• Proprietary S9 Connection: Features the exclusive, custom pin connector block engineered strictly for the ResMed S9 series inlet, ensuring a secure, spark-free physical link.
• Built-in Safety Safeguards: Outfitted with internal protection circuits against over-current, short circuits, and sudden power surges, shielding your sensitive medical equipment from accidental electrical damage.

Device Compatibility:

Works across the entire ResMed S9™ series, including:

• ResMed S9 AutoSet™  
• ResMed S9 Elite™  
• ResMed S9 Escape™  
• ResMed S9 VPAP™ / BiPAP series  
• Compatibility Warning: This power pack is designed exclusively for the S9 architecture. It is not compatible with AirSense 10, AirSense 11, or legacy S8 devices. 

What’s Included:

• 1 x Genuine ResMed S9 90W Power Supply Transformer Brick  
• Note: This product contains the main 90W power transformer block. The standard Australian 3-pin mains wall cord (which runs from the wall outlet to the brick input) can be reused from your original setup or purchased separately if required.

Usage and Safety Tips:

• Proper Ventilation: Position the power brick on a flat, hard, uncarpeted surface during operation. Avoid tucking it beneath heavy bedding or behind tight furniture to allow heat to dissipate naturally.
• Moisture Prevention: Keep the power supply unit on the opposite side of the machine from the H5i humidifier water chamber to eliminate the risk of accidental spills or moisture ingress during routine chamber refills. Always unplug the unit from the wall before cleaning the exterior casing with a dry cloth.