This alternating pressure unit may also use a lateral rotation setup just by flipping a switch. The PressureGuard APM2 is designed with a setup that uses twice the flexibility and value that you'd expect to get out of a therapy unit. The unit is made with a switch that works without having to move from one air line to the next. You don't have to disconnect it either. The APM2 also uses a setup that features the Geo-Matt top surface and two-part Safety Edge that is smooth and easy to use. This works for ten-minute cycles at a time and will not lose pressure too quickly.