The newly-upgraded Climomaster Model 6501 series features an expanded 10-probe line-up which consists of a new high velocity and high temperature probes, a USB interface and greater data-logging capacity. It is made up of a hands-free case for easy operation and a slick-new design with an LCD backlit that is easy-to-read. The device also features an accurate handheld hot-wire anemometer, a probe compatibility feature that makes it possible to have a spare and a detachable probes, and an automatic flow rate calculation function. There is a large data storage up to 20000 measurements and a differential pressure that make up the Climomaster Model 6501. The device also has 7 different detachable probes which include a low-air velocity and Omni-directional probe.