S437 Sail Switches respond to the air velocity in heating or warm air ducts such as used in farm crop dryers. The switch completes a 24V or line voltage burner control circuit only when the blower or fan has produced a preset air velocity.
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By purchasing this item, you are agreeing to have this product installed by a trained technician. The installer or servicer assumes all responsibility for injury or property damage that may result. Refer to your local jurisdiction for installer licencing requirements.