Sensors are key to automation within your smart home. Smarthome sensors can detect motion, open doors and windows, leaks/flooding, humidity, and temperature. Certain sensors can monitor air quality and alert you of smoke, fire and volatile organic compounds. Sensors keep an eye on multiple areas of the home and notify you of any significant events.
Once a sensor is activated, you can set up rules and scheduling for them, such as turning the lights on at 8am and alerting you of any motion at the front door. The number of applications for these rules is limitless.