This portable tachometer features software and USB data collection capabilities that provide added flexibility for maintenance, quality control, and R & D professionals. Unit features three modes of measurement: standard, average, and USB. Standard mode stores data in 24 blocks, with 10 points per block, and can be downloaded via the USB port. The average mode allows you to store data in 30 blocks (date and hour of start/finish are stored in each block) and displays the average readings. The USB mode operates directly from your computer allowing hands-off, 24-hour continuous data collection, and real-time graphic and tabular data observation functions. Unit features automatic data calculation for last, minimum, maximum, and average readings. Smart settings are included for trigger, maximum, and minimum limits (audible alarm indicates out-of-range data).