ActronAir 8Z-24V 8-Zone Module is factory supplied and fitted to ESP Series 2 indoor units, providing 24VAC switching control for up to eight ActronAir Integrated Zone Barrel Motors via RJ45 connection to deliver individual zone airflow management. A failed 8Z-24V module causes complete loss of zone control across all eight zones — fit the 100% Genuine ActronAir 8Z-24V to restore factory zone performance. Low voltage inputs only — connecting 240VAC will damage equipment and void your ActronAir warranty.