Lutron DT-2234B Photo Tachometer

Lutron DT-2234B Photo Tachometer Made in Taiwan Range 5 to 99,999 RPM Resolution RPM 0.1 RPM 1,000 RPM 1 RPM 1,000 RPM Display 5 digits, 10 mm ( 0.4\ ) LCD. Accuracy ( 0.05 % + 1 digit ). Sampling Time 1 second ( 60 RPM ). Time base Quartz crystal . Photo Tach. detecting distance 50 to 150 mm/2 to 6 inch. Typical max. 300 mm/12 inch depending upon ambient light. Circuit Exclusive one-chip of microcomputer LSI circuit. Battery 1.5 V AA battery x 4 PCs. Memory Last value, Max. value, Min. value. Accessories included Carrying case ........... 1 PC Reflecting tape marks (600 mm) .................1 PC Operation manual .......... 1 PC