Nest Temperature Sensor (2nd gen) Product Details The Nest Temperature Sensor (2nd gen) helps you manage hot and cold spots in your home. By placing it in a specific room, you can tell your Nest thermostat to prioritize that room's temperature at certain times of the day to ensure comfort where you need it most. Features Targeted Comfort: Set the temperature a specific room should reach at a scheduled time. Multi-Room Management: Connect up to 6 sensors per thermostat (and up to 18 per home) to prioritize one room or set an average temperature across several rooms. Simple Setup: Easily pairs via the Google Home app and can be placed on a wall, shelf, or tabletop. Long Battery Life: The included battery lasts up to 3 years. Discreet Design: Sleek, circular, and simple "Porcelain" finish that blends into any home decor. Specifications Dimensions Diameter: 2.18 in (55.4 mm) Depth: 0.85 in (21.6 mm) Weight 1.3 oz (37 g) Color Porcelain Sensor Type Temperature Power One replaceable CR2 3V lithium battery (included) Battery Life Up to 3 years Connectivity Bluetooth Low Energy (BLE) App Control Google Home app, Nest app Operating Temp 32° to 104°F (0° to 40°C), indoor use only Warranty One-year limited warranty