Massage Principle(Prevent Bedsores) of Alternating Pressure Air Mattress:
The air pump working a circle for 10 minutes:
Inflatable for airbag-A, and deflation for airbag-B at 1st 5 minutes,
then deflation for airbag-A, & Inflatable for airbag-B at 2nd 5 minutes.
Air mattress