Description
The Belimo EXT-AFS-460 is a differential pressure switch engineered for dependable airflow and duct pressure monitoring in commercial and industrial HVAC systems. With a wide sensing range of 0.4 to 12 inches of water column (W.C.), this switch is well suited for a variety of air handling, fan proving, and filter status applications.
Key Features
- Wide differential pressure sensing range: 0.4–12″ W.C.
- Designed for air duct and air handling unit pressure monitoring
- Compact, field-installable design for straightforward integration
- Reliable switching action for fan proving and filter monitoring applications
- Built to Belimo’s exacting quality standards for long service life
- Compatible with building automation and HVAC control systems
Typical Applications
- Airflow proving in air handling units (AHUs)
- Dirty filter detection and alerts
- Fan status monitoring
- Duct static pressure control
- Commercial and industrial HVAC systems
Product Details
- Brand: Belimo
- SKU: EXT-AFS-460
- Pressure Range: 0.4–12″ W.C.
- Type: Differential Pressure Switch
Belimo is a globally recognized leader in HVAC actuator and control solutions. The EXT-AFS-460 reflects their commitment to precision, reliability, and ease of installation — making it a trusted choice for HVAC professionals and building automation engineers alike.







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