The Google Nest Temperature Sensor is for Nest Thermostats. They work with the third generation Nest Learning Thermostat and the Nest Thermostat E. They’re powered by a CR2 3V lithium battery that you should swap out every Labor Day, along with all your other battery backups and devices. The Nest Temperature Sensor is wireless and is easily configured through the free Nest app. Get personalized comfort where you want it. Improve the accuracy of your Nest thermostat.
Google Nest Temperature Sensors can hang conspicuously anywhere or placed anywhere with good air circulation. (Just don’t forget where you put them!) They work with your thermostat to give it a more rounded view, theoretically saving even more money.