NEW ecobee Smart Thermostat Premium. Built-in air quality monitor, and alerts for poor air quality or filter changes. Included SmartSensor to detect occupancy and help eliminate hot/cold spots. Compatibility with most 24VAC HVAC systems, including furnaces, air conditioners, heat pumps, boilers, and fan coils. Dual-band Wi-Fi (2.4GHz and 5GHz) and Bluetooth connectivity. Works with popular smart home systems like Amazon Alexa, Google Assistant, and Apple HomeKit. See all photos, text message is better, see my other adds, thank you.