S688 Series

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S688 Series

Honeywell Sail Switch S688 Series

Honeywell Sail Switch


The Honeywell S688 Series sail switch proves duct air flow with a contact output signal to a building automation system, electronic air cleaner, humidifier or other system. The S688 is typically mounted in a return air flow duct where the sail will be in the direct path of an unobstructed air stream.


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QtyModelDescriptionIn StockList PriceInternet Price
S688A1007 SPDT SAIL SWITCH In Stock132.66106.13


No accessories found
  • Polyester film sail directly mounted to a snap-acting micro switch for positive feedback
  • Removable spring counterbalances allows mounting in either vertical or horizontal ductwork
  • Top and bottom knockouts in enclosure for flexibility in conduit run layout and wiring convenience
  • Low velocity switch operation for reliable indication - makes at 250 fpm and breaks at 75 fpm

Switching Action:SPDT snap-acting switch

Sail Material:Polyester film sealed on music wire frame

Minimum Air Flow:

N.O. Contacts:Makes: 250 FPM; Breaks: 75 FPM

N.C. Contacts:Makes: 75 FPM; Breaks: 250 FPM

Maximum Ambient Temp.:125℉ (52℃) at switches; 170℉ (77℃) at sail

Mounting Means:Switch mounts on return air duct with two sheet metal screws. An adhesive backed mounting template is provided. Sail is inserted into duct through 1.5″H x 2.3″W (3.8 x 5.8 cm) hole

Mouting Position:Mounts in vertical (up or down) or horizontal air flow

Wiring Knockouts:0.5″ conduit knockouts in either end of case

Finish:Zinc plated case and cover

Dimensions:3.0″H x 3.8″W x 2.0″D (7.6 x 9.7 x 5.1 cm); sail dimensions: 5″ wide max.; 26.2 sq. in. of area


Download Additional Data

document   S688 Series Catalog Page
document   S688 Sail Switch Datasheet