Johnson Controls P74FA-1 Differential Pressure Control Box is a Johnson Controls control device designed to manage differential pressure in building systems. The P74FA-1 model denotes a dedicated enclosure used to monitor pressure differences and interface with building automation controls in HVAC applications. This differential pressure control box provides the essential electronics and connections needed to support differential pressure sensing and control within a cohesive control scheme. It serves as a compact, centralized module within Johnson Controls' family of differential pressure solutions.
