... like the normal door operator ,you need to adjust the speed and buffer speed to a value ,then the door can work smoothly.3. The 36V, ... speed0.7m/s0.6m/sClsosing speed0.7m/s0.6m/sHold on time:0-20sMotorDunker motor GR 63 * 55, 60V, ... track1 setrubber ,three modules3Carriage wheel unit4 sets4Belt clip2 sets5Drive timing belt1 pcfiberglass tensile elments,nylon surface,86Reversed wheel1 set 7Stopper4 ...