The Facet Thermostat - 78636 is a programmable thermostat designed for use in residential and commercial heating and cooling systems. It features a digital display and allows users to set and adjust temperature settings for different times of the day. The thermostat also has energy-saving features such as automatic temperature adjustments based on occupancy and weather conditions. It is compatible with most HVAC systems and can be controlled remotely through a smartphone app. The Facet Thermostat - 78636 is a reliable and user-friendly option for managing the temperature in any indoor space.