Carent QDC 300B Alternating Pressure Mattress System with Pump for Pressure Sore Stage 1 & 2 is recommended for the prevention of pressure sore stage 1, 2 and domiciliary therapies. There are 20 cells with an additional 1 backup cells, making it easy to replace. Easy to set up and install. The alternating cells helps regulate blood flow throughout the body. The pump has hooks at the back which can be hang at the end of the bed. It is also very quiet. | Uses Recommended for the prevention of pressure sore stage 1, 2 and domiciliary therapies. | Product Specification and Features: Cell and base material: Nylon + PVC Dimension: 200L x 86W x 9.5H cm Number of cells: 20 + 1 Free spare cell Pressure Ulcer Stage: I, II Mattress System: Overlay on existing mattress Weight Support: 100kg Technical Parameters of the Pump: Electrical AV 110/220V Pressure range: 40-100 mmHg - 25L x 12W x 10H cm Plastic Casing and Synchronous Motor Test Duration: 24 Hours It has adjustable pressure setting feature with 9.5cm thickness Replace fuse as marked: T1A 250V Power Input: 220V 50Hz, 0.1A | Directions For Use Use as directed. | Safety Information: Read the label carefully before use Keep out of reach of the children Store in a cool dry place Do not smoke on or near the pump Keep the pump away from heated surfaces Caution: Explosion risk if used in the presence of flammable anesthetics