My thoughts on all this AC Infinity stuff I bought. In a nut shell,,,, China Junk! One of the humidifiers always over shoots the setpoint by 5% the other one 1.5%. The Ai is crap. And it's really not Ai just preprogrammed BS that is very poorly done. If you set it up in manual mode then it's nothing more than a 69 Pro+. It's very buggy and unstable. The Controller Ai external temp and rh sensors don't give true ambient readings. If mounted on the tent the unit will heat soak and give high temps and low rh readings. If away from the tent it will take sometimes hours to get the real temp and the rh will read high by as much as 10%. And then if in one of the Ai modes it effect's nothing concerning how the unit operates. So there is no primitive operation or learning. If it does do something it's not noticeable in the graphs or just watching it operate. In either Ai mode it wants to run the exhaust fan all the time. So if your wanting to scavenge heat from your light to help heat the tent,,,, nope that won't happen. In the Ai modes you can set it up to turn the exhaust fan off and have it come on once temps hit a set point. But then it at some point will stop working. Or not work at all. I've set here and watched it cycle and work as good as it's going to. And then just stop turning on the exhaust fan. The way it is now this junk does not maintain my environment as good over all as my old Inkbird and old AC Infinity controller 67 and exhaust fan did. Now to be fair if everything comes together it can work better for 2 to 4 hours in a light cycle than my old setup. And when it does that,,, it's impressive. So in 24 hours it might work right for 4 hours in one of the Ai modes. The humidifiers use almost twice the water my old system does because the exhaust fan runs 24/7 on a min. of speed 1. My old system met my need didn't run the exhaust fan 24 hours and only used 1 gal. of water in 24 hours and held tighter tolerances than this system does in manual mode. Without better programing it's a do not buy setup....