The Google Nest Smart Thermostat in Charcoal, model GA02081-US, is a smart home device that combines temperature, humidity, and ambient light sensors to provide efficient heating and cooling. With a sleek round design and 2.4-inch display, this thermostat can be easily controlled via a smartphone app. It is compatible with Google Home/Assistant and Amazon Alexa, offering voice control for convenience. The programmable features allow for customization of temperature settings, while the Bluetooth and Wi-Fi connectivity ensure seamless connectivity. Made of durable plastic in a stylish gray color, this thermostat is a high-tech home improvement solution for optimal comfort and energy efficiency. This is one I bought for my stepmom house. She doesn?t have internet there so I just put in a old fashioned type.