The CPS Products ABMHOOD200 Airflow Capture Hood with ABM-200 Environmental Meter is a small, portable, wireless smart tool that, when paired with a smart phone or tablet running the latest CPS Link, can measure, record and e-mail a variety of indoor/outdoor temperature, humidity, airflow or pressure conditions taken at residential or commercial job sites. The ABM-200-Hood measures airflow volumes from air supply or return/ exhaust vents in residential or commercial buildings, and displays, captures, and records real-time airflow readings from air grilles ranging from 12 in. to 24 in.. This model connects seamlessly and immediately to smartphones and tablets utilizing Bluetooth Smart technology. Bluetooth Smart (also known as Bluetooth LE/Low Energy) connects over 20 times faster than traditional Bluetooth devices without a complicated pairing process and uses a fraction of the power for long battery life. Formerly AAB.