This power supply is suitable for use with any CPAP and Bilevel machine built on the S9 platform. It can be plugged into wall sockets with an AC configuration but cannot be used with a DC configuration.
All ResMed S9 Series CPAP Machines
Usage Notes: This 90-Watt Power Supply includes an AC power cord for use in North America. A plug adapter may be required for use in countries outside of North America.