... in case og power failure3. Controlling single or double-leaf is optional4. one control unit for two motors, control panel are ... :1.6cm/s,Rod's max travel:330mm or 385mmMax single-leaf length:3m,Max single-leaf weight:300Kg,200KgEnvironment temperature:-20°C ... delay time: Adjustable,Controlling single or double-leaf,Force: Adjustable is optional,Protection class: IP54,24VDC back-up battery can be ...