Stopped using it.
Giving it away to a thrift house.  Pump and hand control unit works very good.  Wedge is heavy duty and durable.  Air hose from pump to wedge attaches on only one side.  Electrical plug on the other side of the bed.  Can't run the hose or the pump cord under our bed.  Had to route the hose around the top end of the mattress to connect it to the wedge.  That kinked the air hose.  Was able to inflate the wedge and it raised the mattress, but it proved to be so high my wife had difficulty getting in bed.  Once in bed she kept sliding down the mattress.  We tried letting air out of the wedge to lower the mattress.  Finally got it so low there was no point in using it.  My wife says she hates it.  We are giving it to a thrift shop.  I give it 2 stars only for it's rugged construction.  Good idea, but didn't work for us.  We don't recommend it.
Rating: 2 stars