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Honeywell® Sail Switch to Control Electronic Air Cleaner, Humidifier

Item: S688A1007
MFR: S688A1007/U

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About This Product

Product Info


Sail switch with 5-inch wide sail activates electronic air cleaner, humidifier, or other equipment in response to airflow from system fan. The S688A is mounted in return air duct where the sail will be in the direct path of unrestricted air stream.

  • Simplified installation with multi-speed fans, inaccessible air handlers, fan motors with voltage or phase different from controlled equipment; eliminated wiring to system fan
  • Polyester film sail mounted on micro-switch snap switch
  • Removable spring counterbalances sail to allow mounting in either vertical (up or down) or horizontal air flow
  • Top and bottom conduit knockouts for wiring convenience
  • Low air velocity switch operation makes at 250 feet per minute (FPM) and breaks at 75 FPM
For use in ambient temperatures normally prevailing in spaces made for occupation, which usually are not higher than 77F (25C) degrees but occasionally may be as high as 104F (40C) for brief periods.


Weight0.85 Pounds (lbs)
Width2.1 Inches (In)
Height1.8 Inches (In)
Country of OriginMEX
Length3.5 Inches (In)
BrandHoneywell Home
For Use WithAir Cleaner
Prop 65No

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