... b)With the help of advanced synchronous belt and perfect design of power supply circuit , the door ... speed,high torque 2500r/minMicrocontrollerApplying PLC techniques and 8 bit-slice microcomputer systemPower supply110V-250V, ... 2 transmitter , 4Radar2pcsBEA,24.125HzTwoMechanism1Track1pc3mm thickness2Carriage4 setsGalvanized and adjustable3Tooth belt1pcfiberglass tensile,nylon surface, 7m 4Belt clip2pcs ...