Like new condition, never used, open box Display 2.4-inch QVGA IPS liquid crystal display (240 x 320 pixels) with digital brightness enhancement film and mirrored glass lens Sensors Motion
Temperature
Humidity
Capacitive touch
Ambient light Power Primary power - from HVAC system wires
Battery backup - 2 AAA 1.5V alkaline batteries
Power consumption - less than 1 kWh/month Connectivity Requirements Compatible HVAC system
Wi-Fi internet connection (802.11b/g/n 2.4 GHz, 802.11a/n 5 GHz)
Phone or tablet running iOS or Android
Google Home app Works with Most HVAC Systems The Nest Thermostat works with 85% of 24V heating and cooling systems, including furnaces, air conditioners, boilers, and heat pumps with either forced air or radiant delivery.