High-Definition, Full Color Display - Larger, full color display screen makes it easier to read
Connects to the Internet - Monitor and control your HVAC system over the Internet from a PC, smart phone or tablet (Total Home Connect)
Displays Outdoor Temperature - Right on the home screen of the thermostat (with Wireless Outdoor Air Sensor)
Temperature Control Anywhere in the Home - Sense and make temperature adjustments from anywhere in the home (With Portable Comfort Control)
7-Day Programming - Allows separate programming for each day of the week
Energy Savings - Program to save up to 33% on annual heating and cooling costs (If used as directed. Savings may vary depending on geographic region and usage)
All-In-One Control - Controls temperature and Indoor Air Quality (IAQ products) such as humidification, dehumidication and air filtration all from a single control in the living space.
Model Numbers: YTHX9321R5000, YTHX9321R5030, YTHX9321R5012, YTHX9321R5079, YTHX9321R5003, YTHX9321R5061, THX9421R5005, THX9421R5013