ActronAir LM7-2W M-Series Wall Controller is the 7-day programmable LCD master pad for ActronAir ducted systems, giving full control of scheduling, mode, fan speed, and up to eight zones from a backlit interface with on-board fault diagnosis. A failed master controller leaves the system unschedulable and can halt zone and mode control entirely. Fit the 100% Genuine ActronAir LM7-2W to restore complete programmable control. Low voltage inputs only — connecting 240VAC will damage the controller, and installation must only be performed by a qualified technician.