Google - Nest Learning Smart Wifi Thermostat - Brass

For use with Honeywell T9 smart thermostat; up to 200' range; 120° horizontal field of view; up to 1 year of battery life; automatically adjusts the temperature; balances room's hot and cold spots

Nest 3rd Generation Smart Learning Thermostat: Take control of your home's heating and cooling without lifting a finger with this thermostat, which learns your habits and adjusts to automatically regulate your home's temperature based on your schedule. The Nest Leaf feature alerts you when you choose a temperature that's energy efficient.