Thermostats run on either line voltage or low voltage. The easiest way to tell if you need a line or low voltage thermostat is to look at the wire. If it is a very thin wire (like a doorbell or speaker wire), you will need a low voltage thermostat. If it is a heavy wire, you will need a line voltage thermostat.
Honeywell thermostats, low voltage thermostats and line voltage thermostats can be found at www.supplyhouse.com
