Many smart thermostats can work with external devices to adjust the home temperature, including external sensors you can place in different rooms or third-party automations. Your thermostat itself works based on the temperature around it.

I have multiple temperature-sensing devices around my home, including SwitchBot Thermometers in each bedroom. If you have Matter-compatible devices, you can make changes to your settings within your home automation app, whether you use Google Home, Apple Home, or others, to ensure your thermostat works in response to these devices. 

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For example, if you want to make sure your kids are comfortable during winter, you can set an automation to turn on the heat when a specific bedroom sensor detects a temperature below 66 degrees.