to further that. you could mount the din8 in a plastic panel at the location the irrigation company would have used anyway. that way you are not freaking them out by making them do something they normally dont do. does the din 8 have buttons on it to manually trigger the relays? if so that would aid in the servicibility for the irrigation company. if not you could put an 8 button keypad near control box for manual calling of each zone, which isnt that bad of an idea for home owner either to overide schedule.