The PRO1 IAQ T855 is a versatile programmable thermostat designed for multi-stage HVAC systems, supporting up to 3 heating and 2 cooling stages. It offers 7-day or 5-1-1 day programming options with intuitive scheduling icons for wake, leave, return, and sleep periods. The large 8-square-inch blue backlit display ensures easy readability, and features like auto changeover, programmable fan control, and dual fuel compatibility enhance system efficiency. Suitable for gas, electric, or oil furnaces, as well as heat pumps with or without auxiliary heat, the T855 provides precise temperature control and energy savings. Its user-friendly interface and flexible power options (battery or hardwired) make it ideal for both residential and light commercial applications.

For an efficient and reliable HVAC system, the PRO 1 IAQ Programmable Thermostat » is a great choice for optimal system performance.

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