I have a Digital aquatics Herpkeeper. It controls humidity, lighting, temperature, and moon-lighting. I'm not entirely happy with the device. The humidity probe is a combo thermometer/hygrometer and isn't designed for damp environments making it virtually useless inside an enclosure. On the plus side it can be upgraded to controll room heaters and cooling, and it can have the ability to email you if something goes wonky.
It also has seasonal lighting allowing varying daylight times and also allows for night temp drop
There is Ecozone vivarium's controller that can controll heat, light, humidity, and misting. It's also capable of sunrise and sunset using incandescent and special flourescent lights. It also has temp drop, moon simulation, and seasonal variances. And it has network connectivity built in
Similarly equipped systems run 300 to 400 dollars.
Honestly I would go with Ecozone. And they are a Cham forums sponcer.