Is there any reason that 3 dampers cannot be wired in parallel to one HM? These would all be on the same smoker moving the same amount. What I'm considering is a damper only control of a WSM. If current is an issue I can let the HM control a solid state relay and source the power to the dampers straight from the supply. Using 3 RD3s without fans on the WSM would allow for a more natural control of the coals. The other option would be to have one RD3 connected to a hose that goes to three dog bowls. It seems in theory that the damper eliminates the need for the fan unless the fuel supply gets low. I usually have more of a need to restrict the oxygen than I do blow more in.
Thanks
Thanks