Nest, 3rd Generation, Programmable Wi-Fi Learning Thermostat, Stainless Steel, Compatible With Most 24V Heating & Cooling Systems, Including 1, 2 & 3 Stage Heating, 1 & 2 Stage Cooling, Humidifiers, Dehumidifiers, Fans, Power & Heat Pumps With Auxiliary & Emergency Heat, Take Control Of Your Home's Heating & Cooling Without Lifting A Finger, Learns Your Habits & Adjusts To Automatically Regulate Your Home's Temperature Based On Your Schedule, Nest Leaf Feature Alerts You When You Choose A Temperature That's Energy Efficient, Wi-Fi Capabilities Offer A Secure & Reliable Connection, Control The Temperature From Anywhere, Download The Free App From iTunes Or Googleplay & Adjust Your Thermostat From Your Smartphone, Tablet Or Laptop, Even When You're Miles Away, Alerts & Reminders Provide Peace Of Mind, Different Features Follow Your Activity, Manage Humidity, & Keep An Eye On The Weather To Provide A Custom Climate For Your Home, SIGNED RESELLER AGREEMENT IS REQUIRED TO ORDER.