Sail Switch S688A1007 For HVAC Air Handlers And Multi Speed Fans, No Sweat Install With Micro Switch, Polyester Sail, Removable Counterbalance, Eliminates Wiring To System Fan, Reliable Safety Switch For Ducted Heating And Cooling
✔️ No sweat install, polyester sail, removable counterbalance mounting
The Sail Switch S688A1007 is a safety airflow switch installed in return air ducts for HVAC systems. It activates connected devices such as electronic air cleaners or humidifiers in response to system fan airflow.
✅ Direct-path sail in return duct for reliable airflow sensing
✅ Polyester sail with micro switch for simple, no-sweat install
✅ Removable counterbalance supports vertical or horizontal mounting
✅ Low-velocity operation: starts at 250 fpm, stops at 75 fpm
✅ Eliminates wiring to system fan by sensing airflow directly
💡 What is a sail switch in HVAC safety systems and how does it work? It uses airflow to trigger a switch that starts or stops devices based on duct velocity.
1) Detects air velocity to control equipment.
2) Reduces wiring by using a simple airflow switch.
3) Typically installed in the return duct for direct airflow sensing.