Check the listing for details. Google Nest 4th Generation Learning Thermostat GA05551-US- No accesories-Unit. Condition: Open box. Listed at 150.95 USD. The Google Nest 4th Generation Learning Thermostat GA05551-US is a cutting-edge home improvement product that provides efficient heating and cooling control. This silver thermostat features a round shape and is designed for wall, surface, or cabinet mounting. With a 2-year manufacturer warranty, this programmable thermostat offers 7-day programming with 9 periods per day, making it easy to customize for your heating and cooling needs. It is compatible with various smart home platforms like Google Home/Assistant, Amazon Alexa, and Nest, and offers features like automatic changeover, energy reporting, and filter replacement indicators for added convenience. Built-in Wi-Fi, Bluetooth, and a sleek design make this thermostat a stylish and functional addition to any home.