Honeywell T8665C Owner's Manual - Page 40

Always use fresh alkaline batteries. Nonalkaline batteries do not last as long and can leak, causing damage to the thermostat and wall surface. reads both the temperature of the wall and in the air, and responds to temperature changes as little as one degree Fahrenheit, so room temperature is more likely to feel right to you and your family. ADAPTIVE INTELLIGENT RECOVERY™ CONTROL Your new thermostat is so smart, it's almost human. You perceive temperature from a variety of sources, not only from the air in the room, but also from your surrounding walls, windows and furnishings. Humans feel differences in temperature as slight as two degrees Fahrenheit. Common household thermometers and standard thermostats sense only air temperature, which may not reflect how hot or cold the room actually new thermostat The thermostat acts like a computer. When calculating the time to turn on your heating or cooling system, it considers air temperature, wall temperature, and the time you want to reach the comfort temperature. After considering these three things, Adaptive Intelligent Recovery™ control gradually changes the temperature from the energy savings setting to the comfort setting (for example, from a heating temperature of 62° at night to 70° in the morning). The system runs continuously until the comfort temperature you choose is reached without overshooting the setting. This saves energy. 69-1538 40