1.Rotary encoder adopts imported highprecision encoder matching with the frequency converter. 2.Control unit SANYO-D is full computerserial CAN bus communication control system. 3.This system adopts distributed control. 4.It adopts shaft-self-study, 5.Automatically form elevator travelcurve, can realize elevator direct landing, reduce the time before elevatorstopping, so the elevator runs efficiently. 6.Distributed cables completely adoptprefabricated plug-in connector that can shorten the installation interval. 7.Equip with special elevator datacommunication interface, can easily realize elevators parallel, group controland monitor. 9.VVVF variable frequency toothing belt door machine.