The Nest T200577 Learning Thermostat (2nd Generation) is a brand new, factory sealed product that offers advanced control features for your home's heating and cooling systems. This thermostat is powered by a 3V button cell battery and can be easily mounted on the wall. It is compatible with Google Home/Assistant for seamless integration into your smart home ecosystem. With its digital control style, Wi-Fi connectivity, and programmable 7-day schedule, this thermostat provides efficient and convenient climate control for your space. Additionally, it boasts features such as frost protection and temperature sensor technology for accurate and reliable performance.