Alpha Active Static Switching System Comb Ultrasound Muscle Stim Blood Pressure: 20 280mmHg Parts are DEHP and Blood Pressure: 20 280mmHg Support print preview Recommended for patients assessed at medium risk of developing pressure ulcers * Alternating Cells continuously redistribute support and relieve pressure * Ventilated cells in the thoracic sacral region provide ventilation to reduce skin maceration * Mode switch allows the system to change from alternating to low air loss at the touch of button * Adjustable pressure control knob allows customized support for each patient * Two way stretch vapor permeable cover which is water resistant and easy to clean * State of the art pump is quiet energy efficient and vibration free * 2 year warranty on parts and labor * 82 L x 34 H x 5 W (inflated) * Recommended weight capacity: 360 Lbs * The mode switch allows a caregiver to easily change the system from alternating pressure to low air loss