1. Uses a permanent magnet motor which has wide torque range and high efficiency, helping to protect the environment and save energy
2. The synchronous vane contains door lock function which makes the door operator and the landing door device 100% open or closed synchronously
3. The synchronous belt drive is direct, running smoothly in lower noise with no slip
4. Full-closed-loop control technology, safe, reliable and easy to adjust
5. The door hanger has a safety hook to prevent collision and fall of
