The ecoboee SmartSensor delivers comfort where it counts and alerts you to unexpected events when you’re not there. Unlock the potential of your ecobee experience with smarter comfort, further savings, and reassurance from anywhere. SmartSensor keeps you comfortable where you are instead of just where your thermostat is through occupancy detection. Place SmartSensor in the most important room, like your bedroom, child’s room, or office to keep it the perfect temperature.