Description
The Honeywell S437A1025 is a high-performance sail (vane) switch engineered for reliable detection of airflow in heating and duct systems—commonly used in applications like farm crop dryers and HVAC burner controls. It ensures safe system operation by activating only when sufficient airflow is achieved
Features:
- Micro Switch SPST snap switch is operated by metal sail inserted in an air stream.
- Sail can trimmed to one-half the original size to double the velocity required to close the snap switch contacts.
- Switch differential can be manually adjusted by turning a knurled knob on the snap switch.
- A conduit knockout is located on each end of the case for wiring convenience.
