Flash Range: 30 - 35,000 RPM/FPM. The DT-3011N heavy duty AC powered stroboscope provides the illusion of “stopped motion”. By adjusting the flash rate, systems in motion appear to be standing still or in slow motion. These strobes can measure rotational (RPM) or reciprocating (strokes per minute) speeds with the same precision as an electronic digital tachometer. Ideally suited for printing inspection, motion analysis, preventive maintenance and speed measurement of repetitive motion, DT-3011N strobes provide timely data on vibrating parts, leaks, spray patterns and a variety of industrial and scientific operations. The DT-3011N stroboscope is extremely easy to maneuver and operate via its lightweight, compact design combined with a simplified user interface. Its rugged metal construction provides unequaled reliability in the harshest environments.