This kit is a direct replacement for Honeywell 393690-4/U and is engineered for high-performance sealing in residential and commercial gas heating systems

In this configuration

a genuine OEM component engineered to monitor flue gas temperatures and prevent hazardous operating conditions

000 to 400

High-Thermal Resistance: Advanced ceramic housing prevents voltage leakage and withstands high-temperature combustion chambers

Johnson Controls AFS-405 Switch This kit is a directThe 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