Smart thermostats are a type of home automation device that regulate the heating and cooling in your home. They are called "smart" because they learn from your behaviors, allow you to control the climate in your home remotely, show you energy consumption in real-time, and can even adjust themselves based on ambient conditions like humidity.

Here are some key features of smart thermostats:

Learning Capabilities: Some smart thermostats can learn your schedule and temperature preferences over time and automatically create a heating and cooling schedule that's optimized for energy efficiency and comfort.

Remote Control: Smart thermostats can be controlled remotely through a smartphone app. This means you can adjust your home's temperature from anywhere, which is particularly useful if you've forgotten to adjust the thermostat before leaving home.

Energy Usage Information: Many smart thermostats provide detailed energy usage reports. This can help you understand your energy habits and make changes to save on your utility bills.

Integration with Other Devices: Smart thermostats can often be integrated with other smart home devices, such as smart speakers (like Amazon Echo or Google Home), allowing you to control them with voice commands.

Geofencing: Some smart thermostats have a feature called geofencing, which uses your smartphone's location to determine when you're home or away and adjust the temperature accordingly.

Alerts: Smart thermostats can send alerts if your home's temperature goes above or below a certain threshold, if there's a power outage, or if there's a problem with your HVAC system.

Popular smart thermostat models include the Nest Learning Thermostat, Ecobee SmartThermostat, and Honeywell Home T9 Smart Thermostat. These devices can help make your home more comfortable, save energy, and reduce your carbon footprint.