The AirPro® Velocity Meter AP500 is a rugged, compact, configurable and high performing component of the AirPro Solutions platform. It is used in conjunction with AirPro® Mobile Application Software, plug- and- play measurement probes and user-defined feature sets. It includes a barometric pressure sensor for air density correction, integrated display, two buttons (power and save) and a rechargeable lithium-ion battery; which can be charged via USB. It provides a subset of operational controls and reporting capabilities while utilizing Bluetooth® Low Energy (BLE) to communicate wirelessly in real-time with the AirPro Mobile Application software - running on the user's preferred mobile hand-held device. It also provides internal storage for use in long- or short-term unattended data logging applications via SD card.