or "sooting" visible through the sight glass

the sealed (booted) switch design provides the necessary protection against moisture and dust ingress required for outdoor or washdown environments

This unit serves as the direct replacement for VR8205S2296 and VR8205T5801

allowing for precise site-specific tuning

Common Questions How do I know if the D-3073-600 needs replacement

Resideo AT72D1691 Transformer R-22 or "sooting" visible through theThe Resideo AT72D1691 Transformer is a heavy duty 40VA power solution engineered for consistent performance in demanding HVACR applications. Designed for versatile installation, this plate mounted 24V transformer features a multi tap primary, allowing for easy integration with 208V 240V power supplies. It provides a stable 26. 5 V. O. C. secondary output, making it ideal for powering complex control circuits, including thermostats, gas valves, and