Whats the maximum number of Automist Smartscan Hydra heads that can be connected to a single pump? Technical Support July 15, 2020 22:14 Updated 6 heads per pump Related articles What is the specification of the wireless Hydra alarm? Is there an override button? What is the specification of the wired alarm for Smartscan Hydra? What Smartscan Hydra sprayheads are compatible with wireless alarms? When does water start flowing from a traditional domestic sprinkler? Comments 0 comments Please sign in to leave a comment.