What size is Smartscan Hydra head & face plate? Egli November 04, 2019 22:08 Updated Dimensions for the Smartscan Hydra face plate: 129 x 124 mm Dimensions for the Smartscan Hydra head: 96 x 86 mm Related articles What the specification of the filter for Automist? Where has Automist been installed? Will it turn off if my electric meter stops? What if I have a prepay meter? Why are the nozzles wall mounted instead of on the ceiling? What is the ip rating of the equipment? Comments 0 comments Please sign in to leave a comment.