1. The QF-150 is a concealed door opener that can be installed concealedly and is suitable for heavy-duty doors.
2. The installation is excellent, neat and aesthetically pleasing.
3. It uses a full gear transmission system, ensuring smooth operation.
4. It features low noise design, providing a quiet experience.
5. It has full digital control for parameter adjustment and error codes.
6. It is equipped with a highest priority input port (for fire emergency, etc.).