ActronAir C7-4 C-Series Commercial Wall Controller is the 7-day programmable interface for ActronAir light-commercial systems, managing up to three stages of heating and cooling, four zones, and after-hours scheduling from a single pad. A failed controller leaves the system without scheduling, staging, or zone control, forcing manual operation or taking the unit offline. Fit the 100% Genuine ActronAir C7-4 to restore full commercial control — confirm your model with our team before ordering. Low voltage inputs only — connecting 240VAC will damage the controller, and installation must only be performed by a qualified technician.