The highly integrated 32-digit double-CPU,inter-monitor of master/slave CPU enhance the data processing speed to the greater extent with the more perfect functions and the higher reliability.The high precision car shift detection technology can fulfill almost zero-to-zero leveling accuracy.The passengers find their lift legs in entering into and exiting from the cars.It has the embedded specialist self-diagnosis system to the trouble cause,storage and display fuctions of the defect reason,It is easy and simple in expanding the functions too.