... programmable modes including provision to interface with builidng security system, monitoring the doors position status,built-in UPS,etcb ... passaged) The microcontroller also provide the interface for alarming system ,safety system ,etce)Fuse protection at 3A, 250Vf)Protection when working ... noise is 50db to 60db.b)With the help of advanced synchronous belt and perfect design of power supply circuit , ...