It's important to note on here that that thermostat is a 24VAC (not exactly a common power rating) thermostat. Also (I couldn't find a spec sheet on it) most likely it won't have much output power. Probably in MiliAmps. It won't be able to be used to operate a chest freezer, refridgerator, or heating element without the integration of relays. Don't know what you'll need for a power supply. These are meant as replacements for your furnace and AC temp control.
*and I was obviously typing slowly*