this dual-run component is a critical upgrade for systems formerly utilizing part numbers 100335-06 or 89M7401

this specific kit is precision-engineered only for the 1/2" 38-200 series

000 to 400

The T-4000-611 is a dual-temp adaptor

Johnson Controls AFS-405 Switch this dual-run component is aThe Johnson Controls AFS 405 is a professional grade adjustable differential air pressure switch designed for precision monitoring in HVAC, DDC, and energy management systems. Engineered with a glass filled polycarbonate housing and a high performance silicone diaphragm, this sensing switch is optimized for detecting positive, negative, or differential pressure between 0. 05 and 12. 0 inches water column. The inclusion of gold plated contacts ensures