Does Wyze Thermostat use batteries? Brenda October 02, 2020 20:32 Updated Follow No, it's a hardwired thermostat. Wyze Thermostat does not use batteries. It is hardwired to your HVAC system, and powered by a C-wire. Related articles Do I need to have a C-wire? Can I control Wyze Thermostat from a computer? Is my current thermostat wiring compatible? Introducing Wyze Thermostat Can I create a schedule for Wyze Thermostat?