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The Resideo S688A1007/B is a sail switch designed to activate electronic air cleaners, humidifiers, or other equipment based on airflow from system fans. This switch is strategically mounted in the return air duct, ensuring the sail is in the path of unrestricted airflow for optimal performance.
This sail switch is essential for enhancing indoor air quality by providing reliable airflow detection.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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