1) Driven way: By strap. 2) Adopt hi-tech electronic orientation, no accumulated error, accurate and reliable. 3) Auto-mnemonic function when power off. 4) Stop and change direction arbitrarily in the midway, auto-stop while reaching the ending, protective power off while accidental short circuit. 5) Frequency: 50-60Hz. 6) Voltage: 12V DC. 7) Rated power: 40W. 8) Rotational speed: 0.25m/s. 9) Vertical loading: 70kgs. 10) Rail type: 32# square rail. 11) 5 emission channels infrared & radio double-mode remote controller: It can control multi-curtains work at the same time or seperately. Distance: 30m.