A thermostat typically operates on a low voltage level, around 24 volts ac. this is often supplied from the hvac equipment that the thermostat is controlling. however, the exact voltage requirement may vary depending on the specific model of the thermostat. for detailed information, i would recommend referring to the user manual or installation guide of your specific thermostat model. if you need further assistance, please reach out to lennox technical support at 1-800-453-6669 if you are a technician or 1-800-953-6669 if you are a homeowner.
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