This power cord allows the use of an S9 device including the H5i Humidifier and ClimatLine from any 12V or 24V power source. It is used to connect a ResMed S9-series CPAP machine to any 12-volt or 24-volt battery receptacle, such as an automobile, boat, or RV cigarette lighter socket. Use this item to make traveling or overnighting in your car, boat or RV possible. Length is 8 feet. ** Note - you will need a different power converter to power the S8-series ResMed CPAP machines. The part number for this cable is 33942.
** This cable is REQUIRED when using an S9-series VPAP machine with any 12V or 24V power source. Other cables will physically fit the ResMed DC input on the machine, but they may damage the machine's power supply, because the polarity is reversed.