Today I received a full X-10 home automation kit that I purchased off Ebay. For $37/shipped, not a bad deal. Four Appliance modules, Four Lamp modules, one Firecracker module, one transceiver, one controller, three light switches, and three keychain remotes.
Using the Firecracker, Transceiver, and an Appliance module, I now have the rotating fan in the fishtank support room set to automatically turn itself on when the ambient room temp gets over 70’F and turn itself off when the temp is below 65′.
I also added a Firecracker status query link to my little front end mockup. If I got another appliance module, I could use the automation software to turn my lights on and off too.