In search for 24h hum/temp controller

For the Stomata to stay open and also maintain transpiration at prime levels for maximum plant growth the hum/temp difference between night and day levels require a consistent number. Difference 0-10F and 0-10%RH is within range, to maintain those numbers at as close to zero as possible a controller is needed to operate as needed intake/exhaust, CO2, and heat. In search for the best device to maintain proper day/night hum/temp numbers. Any advice???
 
Thanks for the reply being a newbie and also green to forum etiquette i appreciate the info. There are a few dozen forums online RIU has very informed members that can articulate thoughts,pruceedures, experiences very well. Titan produces great products. I've checked into the Kronus 4, evc-2, CAP air4 and 3dn, and green air ct-ct-3p. The evc-2 appears to have more control. 2 temp control outlets, 1 humidity outlet, 1 co2 outlet, and 1 outlet for a heater at night, it is also all digital. I'm not sure if the co2 outlet is for tank or burner? The others have only 4 outlets with maual controls with the same variance in measurements. +/-1f and +/-3%rh. here is a little evc-2 memo http://www.youtube.com/watch?v=3aKDSw5--S0
 
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