Senses positive pressure from air handler blower to activate Duct Booster fans
Rated for fan up to 15 amp at 120 Volt
Works year-round for both heating and A/C
Simplifies wiring
Senses duct pressure via ¼” hole in duct between main blower and Duct Booster Fan. Pressure from main blower actuates switch to operate Duct Booster fan automatically. 120 Volt, 15 AMP max. Makes on pressure rise of +.05 ± .02” W.C.
