Operations FAQ     Which CPAP masks can be used with Transcend?
Transcend PAPs can be used with all CPAP masks, including nasal
cushion, nares pillow, and full face.  If the Transcend
Waterless Humidification option is used, mask compatibility is
important. See the question: Is Transcend Waterless
Humidification technology compatible with all CPAP masks? for a
discussion on mask compatibility.  To give you the freedom to
use the mask of your choice, Transcend does not come with a CPAP
mask. This is common practice with all CPAP offerings.  Can
batteries be used at the same time the Transcend is plugged into
another power source?  Yes. The P4 and P8 batteries can be used
in line with AC power (home wall power) or DC power (such as in
a car, boat or RV). By doing so, the P4 or P8 battery will
provide an uninterrupted power supply, just like a laptop
computer battery. In the event of a storm or power outage, using
the Transcend battery in line will guarantee power for the
therapy you need for a good night’s sle