The Standard 90-Watt S9 Power Supply from ResMed measures approximately 6.5 x 2.5 x 1.5 inches and weighs approximately 1.25lbs. It is designed to power any S9 CPAP or VPAP as well as an attached H5i Heated Humidifier.
The S9 30W Power Supply measures approximately 4.0 x 2.25 x 1.25 inches and weighs approximately .75lbs. It is smaller and lighter than the 90-Watt version and should only be used to power the S9 CPAP or VPAP unit. It is not designed to power the H5i Heated Humidifier.
With the Kensington Travel Adapter, there's never a need to be at a loss for power again. This all-in-one unit is compact and portable, providing plug adapters for use in more than 150 countries worldwide including most of Europe, Africa, Australia, Asia, and the UK. Simply slide out one of the built-in plugs and plug in your CPAP or BiPAP system. Its safety release button and built-in fuse ensure safe operation for most other consumer electronic devices as well including laptops, cell phones, etc.
ResMed's DC-12 Converter allows you to operate S8 CPAP or BiLevel machines from 12 or 24 volt DC power sources like the "cigarette" style sockets found in most cars, boats and other vehicles.
ResMed's DC-24 Converter allows you to operate S8 VPAP BiLevel machines, that are designed for 24 volt DC power sources, from 12 volt DC power sources like the "cigarette" style sockets found in most cars, boats and other vehicles. This is the only cord that should be used with these ResMed systems.