Both the vma1410 and 1420 have a pressure sensor and actuator in a prewired unit Vma1400 series controller pdf manual download View and download johnson controls vma1400 series manual online
AP-VMA1420-0 Johnson Controls VMA | Apex Controls
Johnson Controls Ap Vma1420 0 G Electronic Thermostat Automation
Application the variable air volume (vav) modular assembly (vma) 1400 series consists of configurable digital controllers Ideal for building automation vav systems.
