The AF3-D Air Flow Switch is a critical component for HVAC systems, ensuring proper airflow and system efficiency. This switch features a compact design and is compatible with various air handling units. It operates on a pressure differential principle, providing reliable performance in detecting airflow conditions. The unit is constructed from high-quality materials, ensuring durability and longevity. With easy installation via standard connections, the AF3-D is an essential tool for maintaining optimal air quality and system performance in residential and commercial applications.