Knows when a room is occupied and communicates the temperature to your ecobee smart thermostat from up to a range of 60 ft, through walls and floors. This prompts your thermostat to make temperature adjustments ensuring comfort. Place SmartSensor in your bedroom and say goodbye to those moments that are either too hot or too cold throughout the night. Understands your household comings and goings, Condition: Fulfilled by Amazon | ASIN: B07NQVWRR3