The damper actuator, which controls zone dampers, and the air brake is quiet and has a long-life spring return. The air brake has a patent-pending Whisper Motion that offers a quiet operation. The air brake adds virtually no resistance during the power open cycle but adds drag as acceleration increases during the spring return cycle. The slower return speed offers longer life for the gearing.

Hansen Corp.
812-385-1463
www.hansen-motor.com