The AN250W is a small airflow meter with Bluetooth® connectivity that allows building, HVAC, and maintenance professionals to see and share air velocity and temperature data directly from a mobile device via the free ExView app. Users can receive greater insights into environmental conditions and building health by capturing data, visualizing patterns, setting visual and auditory warnings, and creating and sending reports. The AN250W is part of the Extech 250W Connected Series of products, which can help you evaluate problems and report on them in the field. This enables you to increase the speed and quality of judgments so that urgent issues can be addressed instantly.