HONEYWELL T8600D2028 Chronotherm Deluxe Programmable Digital Thermostat. Taupe 7 Day Programmable Chronotherm IV Plus Thermostat with automatic/manual changeover, 1 Heat/1 Cool stages and R,W,B,O,Y,G,RC, OT, OT terminals for gas, oil or electric systems. Chronotherm IV Plus Programmable Thermostat provides electronic control of 24 Vac single-stage or multistage heating and cooling systems, including heat pump systems.
Features:

• Large display with bright back lighting makes the LCD very easy to read.
• Full seven-day program capability; different schedules and temperature setpoints selectable every day to match homeowner's flexible schedule.
• Copy key makes programming easier and faster for installer and homeowner.
• Daylight Savings Time (DST) key for quick change in and out of Daylight Savings Time.
• Models available with programmable fan operation for added homeowner comfort.
• Easy temporary temperature setpoint changes for current period, vacation hold (1 to 255 days) or indefinite hold adds to homeowner comfort and energy savings.
• Frequently used keys are located near liquid crystal display (LCD)for quick and easy access to information.
• Attractive styling complements any decor to homeowner's delight.
• Models available with C7089B1000 Outdoor Temperature Sensor capability for homeowner convenience; sensor is more accurate than a thermometer.
• Configurable features allow one model to be used to replace many different models (less inventory, no longer need to carry separate models to get these features).
• --F or C temperature display;
• --Automatic or manual changeover;
• --Electric or conventional heat fan operation;
• --Adjustable heating cycle rate.
• Minimum-off time for cooling compressors and heat pumps protects equipment and extends equipment life.
• Easy installation, setup and system test saves installer time and increases productivity.
• System test simplifies troubleshooting and saves time by overriding time delays.
• Adaptive Intelligent Recovery control brings room temperature to temperature setpoint at the programmed time, maximizing comfort and energy savings.
• Setpoints are permanently held in memory (no batteries used) and retained during power outages for increased installer and homeowner convenience.
• Powerstealing, hardwired and battery powered models available for virtually all equipment and application needs.
• Universal Versaguard® Thermostat guards available for added security.
• Adjustable temperature range stops.