What are the dimensions of the Hydra controller? Technical Support February 23, 2019 08:17 Follow 155mm height x 155mm width x 42mm depth Related articles What height are the Smartscan Hydra heads mounted? How deep does a nib or pillar need to be for it to become a preferred installation position? What do I do if the Apollo wireless alarm is beeping and flashing? Is Automist Smartscan Hydra WRAS Approved? What the specification of the filter for Automist? Comments 0 comments Please sign in to leave a comment.