Accelerometers measure movement of a device. They are commonly used to change the device state, facilitate pairing with other devices, detect changes in orientation and adjust the device’s display layout, or to detect tampering (i.e. if a device is moved when it isn’t expected to move). Emits ultrasonic pulses from the speaker to detect proximity of a user for a more responsive and proactive device experience, such as triggering the display of media or device controls on the device. Magnetometers (also commonly referred to as magnetic sensors) measure the strength of and changes to a magnetic field. When used for device control, a magnetometer can detect the position of an object based on changes to the magnetic field when the object is moved. We'll also more clearly explain what types of information these sensors send to Google, as well as examples of how we use that information, to help you understand their purpose better.

The current sensors in Google's connected-home devices and services generally fall into the following categories: On the Nest app: Tap on the Thermostat circle > Tap the Eco tab at the bottom of the screen > Select Start Eco. Microphones detect sound waves and are used for a variety of purposes in Nest devices, including to capture speech, and as a sensor to detect specific sounds or to detect motion nearby. Nope! The Nest Temperature Sensor connects to your Nest using Bluetooth and has a range up to 15 meters (about 50 feet). That measurement is in a straight line that can go through walls or floors so you'll probably be good unless you have a very large house. Sometimes house wiring can monkey with Bluetooth and shorten its range, but those issues are relatively rare. How many Temperature Sensors can I use?On the Nest app: Tap on the Thermostat circle > Tap the History tab at the bottom of the screen. Ten days of energy history will then appear, showing you how many hours your heating was on for.

Even if you have a multi-story house that has warm or cold spots, you might not want to use a Temperature Sensor. It all depends on where you spend your time and where the main thermostat is. Ultrasonic sensors use sound waves to measure distance to an object and can be used to detect when someone is near a device. Google's connected home devices and services rely on cameras, microphones and other sensors to provide helpful features and services. These sensors can detect things like motion and sound to protect your home and loved ones, and make your lives more convenient and comfortable. And while they make our connected home devices more useful, we understand that you, your family and your friends need to trust that we'll handle your data responsibly. Allows you to talk to the Google Assistant, make calls, and with a Nest Aware subscription in certain regions, detect sounds like smoke alarms or glass breaking (if you have enabled that feature). Provide occupancy signal for home automation (such as Home and Away routines), if you've enabled the feature. On the Nest app: Tap on the Thermostat circle > Tap on the Schedule tab at the bottom of the display > Tap once on the day you want to change a temperature in to go to a new screen for just that day > Tap Remove in the bottom right corner of the schedule screen > Tap on the temperature you want to remove. You'll need to tap 'Remove' for any subsequent temperatures you want to remove.Nest may infer occupancy from detected motion for comfort optimisation, energy saving and home automation (such as Home/Away Assist or Home and Away routines). Inefficient heating or cooling systems can also cause larger temperature differences between rooms. For instance, rooms that are further away from your system can sometimes be warmer or cooler than the rest of your home.

Activity sensors that detect activity or changes to the physical state of the device, such as a door sensor that detects when a door opens, or an accelerometer that detects when a device is moved. Some activity sensors may also detect the presence or movement of people in your home. On the Nest app: Tap on the Thermostat circle > Tap the up or down arrows to increase or decrease the temperature.

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Google Home, Google Home Mini, Google Nest Mini, Google Home Max, Google Nest Audio, Google Nest Hub, Google Nest Hub (2nd gen), Google Nest Hub Max, Google Nest Wifi point, Chromecast with Google TV, Google Chromecast Voice Remote The new sensor is a step in the right direction, but stops short of a fully-fledged zonal heating system.