The Young Regulator 4011 round 2-position 24V motorized damper is ideal for zone control, outside
air, air intake, and exhaust air vents. The 4011 features a hysteresis synchronous motor that has a â€œlost motionâ€ drive to protect the gear train from closing shock.
Damper is whisper quiet.
The 4011-IF includes our Interface Board that simplifies field wiring.