Grow Zone Controls HTC is the ultimate in climate and CO2 controls. It can control Temperature/Humidity/ and CO2 from one controller! An added bonus is the 24 hour log, this is something that is not commonly found on controllers in our industry.The 24 hr log will tell you the minimum, maximum, and average temperature,humidity and CO2 for every hour in the day! this is extremely useful info!
Check out the video users guide to learn how to program the HTC!

HTC