ecobee Comfort and Security Bundle, Smart Thermostat Premium & SmartSensor

Security, savings and comfort, all in one device – Your security base station and keypad. This multi-talented thermostat listens for the sounds of smoke alarms to keep your family safe, and radar motion sensor secures your main floor when you’re away.
Total coverage for doors and windows – Get alerted when a door or window is opened for complete entryway security. With an ecobee Smart Security subscription, the sensor can alert you to unexpected movement in your home when your system is armed
SmartSensor acts as a motion detector and occupancy sensor, alerting you to anyone moving in your home when the system is armed. Makes sure your whole home, not just the room with your thermostat, is the perfect temperature.