Just about anything as long as it doesn't exceed the watt capacity. If you need more than one heat source, you can plug a 2-wire extension cord into the thermostat, again, as long as it doesn't exceed the wattage of the cord OR the thermostat. You can use whatever suits your needs best. (Your question is cut off after "It says sold separately and I'm" so I'm sorry if I didn't address your question.)
answered 1 year, 2 months ago
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