ActronAir 8Z-24V Data Cable is the genuine replacement data cable for the 8Z-24V 8-Zone Module, maintaining the communication link between the zone module, indoor board, and wall controller on ESP Series 2 ducted systems. Damaged or incorrect cabling causes zone communication failures and loss of zone control — use only genuine ActronAir cable to maintain system warranty. Low voltage inputs only — connecting 240VAC will damage equipment and void your ActronAir warranty.