Standard Features - Large, Clear Backlit Digital Display Easy-to-read in various lighting conditions. (Also available in smaller standard screen size) - Wireless Can be placed anywhere in the home without running wires or cutting into your walls - Connects to the Internet Monitor and control your HVAC system over the internet from your PC, smart phone or tablet (with Total Connect Comfort Services) - Displays Outdoor Temperature & Humidity Just like a weatherstation, right from the home screen of the thermostat (with Wireless Outdoor Air Sensor) - Temperature Control Anywhere in the Home Sense and make temperature adjustments from anywhere (with Portable Comfort Control) - 5-1-1 Day Programming Allows one program for the weekdays and separate programming for weekend days - Easy-Access Battery Replacement Flip-out door allows for easy battery replacement without removing or disassembling the thermostat - Built-in Instructions Simple, pull-out instruction manual - Model Numbers YTH6320R1001, YTH5320R1000, TH6320R1004, TH5320R1002, YTH6320R1114, YTH6320R1122 - 5-Year Warranty