The Nest T3029EX 3rd Generation Learning Thermostat in black is a smart and efficient device that allows you to control the temperature in your home with ease. With its 7-day programmable schedule, you can set specific times for your heating and cooling systems to activate. The thermostat is powered by a Li-Ion battery and can be controlled via the Nest app on your smartphone. Its Wi-Fi connectivity allows for seamless integration into your smart home system, making it a convenient and modern addition to any household.