When it came to automating my new greenhouse, I took the easy way out--I purchased a Wadsworth EnviroStep controller. I blanched at the price, but it had a lot of features that I wanted, and since the greenhouse was being built hundreds of miles away from where I was then living, the simplicity was worth a lot to me. This controller allows me to control the interactions between the vent, the KoolCel evaporative cooler, and the exhaust fan, as well as simpler things such as turning the heat on and off. It also supports external sensors, but the only one I have (it comes with the base unit) is for temperature, and I find that I don't use that feature--it's enough for me to just limit the size of the vent steps as the vent opens. I've had it for two years. and I am glad I bought it. Every time I wonder if I can coordinate some pieces of equipment, I look at the built-in options and find that it's already there, just waiting for me to specify what I want. It is very easy to program.
The usual disclaimer: I have no financial interest in Wadsworth or any of their products. --Lisa Thoerle, pleurothallidiot -- Lisa Thoerle, Little Compton, RI [EMAIL PROTECTED] [EMAIL PROTECTED] _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
