Johnson Controls AFS-405 Switch Verify your transformer output before

Verify your transformer output before installation

Precision Fit: Specifically engineered as a replacement for PLT52A-600R and KIT21A-601 to eliminate field-modification errors

Always perform a full combustion analysis when this part is triggered

This rating indicates the open-circuit voltage produced by the thermocouple when heated by the pilot flame

Key Benefits Precise Thermal Sensing: Features calibrated O61 C36 specifications for accurate defrost initiation and termination

Johnson Controls AFS-405 Switch Verify your transformer output beforeThe 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