Do they exist? A new addition to my Christmas light show this year will be three sky-shooter water cannons, designed to be airpowered and shoot a ton of water into the air, hopefully about 60 ft. (or twenty ft over my house, not sure how tall my house is) The way i anticipate designing this is to have pressurized air connected to a water tank and on cue (via DMX of course) the valve opens to the water tank and presto, lots of water in the sky. Obviously for that, we need a solenoid valve to be triggerable via DMX, and what would be the best way to do that? I think having the solenoid on a power relay would work, but im curious if there is a more direct and better solution. Thanks!