Overview With the Nest Temperature Sensor, you can finetune the temperature of any room your home. Place the Sensor on a wall or a shelf and it will tell your Nest Learning Thermostat 3rd Generation (sold separately) what temperature the room should be and at what time. Bluetooth connectivity means installation is simple and wire-free. More Information Compatible with the Nest Learning Thermostat 3rd Generation (sold separately) Tells your Nest Thermostat what the temperature in a certain room should be at a certain time of the day Bluetooth LE connectivity enables simple wireless connection to your Nest thermostat; just place it on a wall or shelf and installation is complete Can be customized, controlled, and programmed using the Nest App on your compatible smartphone or tablet Specification Standards Compliant: Yes Device Compatibility: Installed Nest Learning Thermostat (3rd Generation); Nest Thermostat E HomeKit: No Works with Nest: Yes IFTTT: No Works with Google Assistant: No Works with Amazon Alexa: No Connectivity: Bluetooth Low Energy Apps: Nest App Self-Installation: Yes Motion Activated: No Remote Controlled: Yes Backup Battery: No Touchscreen: No Multi Stage Control: No Works Offline: No Compatible Systems: Nest Thermostat E; Nest Learning Thermostat Width: 4.83 cm Height: 2.03 cm Depth: 4.83 cm Weight: 266 g