Electric beds typically have two to four motors that independently raise or lower different sections of the bed. To operate the bed, you plug it into the wall and use the hand controller to adjust it. 

Furthermore, the ergonomic design of professional physical therapy equipment ensures safety and comfort for both therapists and patients. Devices like treatment tables, plinths, and adjustable chairs are constructed to facilitate easy access and proper body mechanics during therapy sessions. This focus on ergonomics helps prevent injuries among therapists while maximizing comfort for patients who may already be experiencing discomfort from their conditions.