... used AC synchronous motor 2,constant rotation rate 3,bidirectional communication CE approve Taiyito TDX4466 flat open electric curtain motor is for ... . 1.used AC synchronous motor,high power,2.constant rotation rate ,strong load,just one motor and one track .3.bidirectional ... meters curtain length should use double motor ) x10 home automation flat open curtain motor ,very simple and easy to install,just ...