This machine had "stackable" design. In addition to the base machine, you could add or omit a humidifier, and a battery backup unit. They did not offer a heated hose or any data collection (besides motor hours). However, the basic concept should allow for these things to exist as separate components that can be included or not and allow all the pieces to assemble neatly regardless of which components are included or omitted.
Note that the company went out of business after a fire destroyed their factory in China.
Note below (top to bottom): The CPAP, the heated humidifier component and water tank, and the battery backup unit.
