Hey guys, I know this threat is a little old, so you may have come across this idea by now, but what if you used a Samsung SmartThings setup and put one of their $20 temperature sensors in the green house, and then a smart plug connected to the fans. Then you set up two rules - one for when it gets too cold and one for when it gets too hot? Could that work? If you don’t have WiFi in range, either use the Zwave network w/ sensors, or you could just plug in an old router out the the green house and protect it somehow from the moisture and have the smart hub out there. Even if you purchased all this to use solely for the green house and nothing else (the hub can do a LOT more) it would still be pretty cheap. You’d be into smart equipment less than $100. Get the SmartThings generation 2 for a backup battery incase the power ever goes out.
