Resideo TS812A1007 Millivolt Heat Only Thermostat 50°F-90°F

The Resideo TS812A1007 is a basic millivolt heat-only thermostat designed for simple and affordable temperature control in homes with millivolt gas furnace systems. At only 0.21 pounds, it's a lightweight and space-saving option. Unlike programmable thermostats, this model uses a simple dial with an analog temperature display (no digital readout) to set your desired comfort level between 45°F and 95°F. The millivolt rating (18V-30V) indicates it draws power directly from the pilot light flame in your furnace, eliminating the need for batteries or a separate power source. A key feature is the "positive off" function. This means the heating system completely shuts down when you turn the dial below the set temperature, preventing unnecessary energy use. The hardwired electrical connection ensures a reliable link to your furnace control board. Overall, the Resideo TS812A1007 offers basic functionality and easy operation at an affordable price for millivolt gas furnace systems.