three- functione.eletromotor controls the back board up and down,the knee board bending and extending.Eletromotor controls two poles up and down,to realize the whole bed board up and down.ABS engineering plastic headboard and footboard,can take apart.ABS siderails,can move up and down.stamping carbon steel bed surface with soft joint,luxury suction plastic bottom setting with 5 inch central locking casters.back board slope:0-80degree,knee bed slope:0-30 degree,whole bed board rising:0-250mm,back and fornt slope:0-10 degree.loading capacity:200kg;3 motors