Certified to meet the highest standards of home comfort and energy conservation. The ecobee 3 Lite Thermostate adjusts the temperature and turn on vacation mode anytime, anywhere. Leave home with peace of mind. Sends an alert if there is a disruption, like a sudden temperature drop that could lead to frozen or burst pipes. eco+ makes saving energy automatic.Our next-generation thermostat software unlocks additional energy savings on heating and cooling and enhanced comfort. Reduces strain on the electricity grid (compared to a hold of 72°F/22°C.) Automatically heats or cools when electricity is cheaper and cleaner (compared to a hold of 72°F/22°C.) Adjusts for Comfort in high and low humidity. Learns your routine and recommends changes to your thermostat schedule. (With ecobee SmartSensor, sold separately.) Everything you need to install your smart thermostat, besides basic tools, is in the box and installation should take about 45 minutes.