Lateral rotation and alternating simultaneously in one system, rotation angle can be adjusted from 0-40 degree. Three options for turning over: Turn left,turn right, turn left and right. Three mode selections: static mode, alternating mode, pulsation mode. Digital display cycle time and warning message. Built-in Alarm: low pressure alarm, power failure alarm, service alarms with error code. Two-stage sitting detection to prevent the patient from sit-up in the turning mode and causing falling from bed. Dual-way “Quick-CPR” provides immediate mattress deflation in case of emergency.