The GE Telaire Vaporstat 7000 Series is equipped with Telaire's patented dual beam Absorption Infrared™ technology. The Telaire 7001 is an easy-to-use CO2/temperature monitor designed for use in residential or commercial applications. With the ability to display CO2 readings and calculate outside air ventilation rates in cfm/person. The monitor is an ideal tool for: identifying energy saving opportunities in over-ventilated spaces, determining if air quality complaints are due to insufficient ventilation, or locating the presence of combustion fumes generated from vehicles and appliances. It also comes with a with a power adapter to cut the need of a battery.