Oh that's good to knowThey really only regulate temperature but display both parameters - I'm a distributor for them. What size tent are you in?
I have 2 tents. 0.8 X 0.8 X 1.6 and 1.2 x1.2 X 2.4. Air flow is controlled with 3 X 6 inch fans. One pulls air into the smaller tent with an intake filter attached. One transfers from the small tent to the large tent and the 3rd fan exhausts out through a carbon filter and exits via the window.
I might change that up and seperate each tent so both exhaust through the window and the large tent pulls in its only supply through another intake filter.