garage door opener Features: 1) Mechanical restriction/electrical restriction (optional) 2) Uses aluminum alloy guide track, operated smoothly, with low noise 3) Bigger torque, saves more electricity, consumes 4W 4) When meeting the obstacle, it automatically reversedly moves 15cm 5) International advanced coding technology is adopted in the remote controller of open motor and coding capacity exceeds 100,000,000mAh Inner packing: Foam plastic board and plastic bagOuter packing: Strong cartonConveyance: Qty/20' FCL: 500-750 sets Qty/40' FCL: 1,000-1,500 sets