The Honeywell YTHX9321R5079 Prestige 20 HD Comfort System Kit has a RedLINK enabled line that includes a 7 Day Programming wizard, Multi-Language Options which includes English, French and Spanish display and Customizable Service Reminders. It is Configurable for residential and light commercial applications. It also has a USB port for transferring Installer Setup, Customizable Reminders, Custom Events and Holidays to multiple thermostats. This Prestige Thermostat is a high definition color touch screen thermostat. It works with RedLINK accessories including the RedLINK Internet Gateway, Portable Comfort Control, Wireless Outdoor Sensor and Wireless Indoor Sensor. This Honeywell YTHX9321R5079 Prestige 20 HD Comfort System Kit redefines how a thermostat can look and function and is the easiest-to-use programmable thermostat. It has multiple staging options to provide comfort or energy savings and precise temperature controls (Â± 1 F) for reliable and consistent temperature. The Honeywell YTHX9321R5079 Prestige 20 HD Comfort System Kit has 2 assignable outputs to control humidification, dehumidification, ventilation and a stage of heating or cooling. It is perfect for your homes and other commercial buildings, Portable Comfort Control, Wireless Outdoor Sensor and Wireless Indoor Sensor. Honeywell has an excellent presence in the world of globalization. They lead when it comes to performance quality and delivery. Honeywell is also the global leader in HVAC (heating, Ventilation, Air Conditioning) product. They master new technologies that address the tough challenges such as safety, security, and energy efficiency.