providing a secure

provided the base T-4000 unit is selected for the specific control action required

Technicians typically look for chattering contacts

this is a Single Pole Single Throw (SPST) relay

Johnson Controls T-4002-303 Conversion Kit R-410A providing a secureThe Johnson Controls T 4002 303 Conversion Kit is a professional grade solution designed for upgrading or replacing legacy pneumatic thermostats in commercial HVAC systems. This Direct Acting kit features a standard 55 85F dial range, providing precise pneumatic control within tight tolerances for optimized building automation. Engineered to replace Honeywell, Robertshaw, or older Johnson Controls models, the T 4002 303 streamlines the retrofitting