Digital Non-Contact Tachometer cum Digital Counter

Uses the CPU technique, photoelectrical technique, and junction laser technique for one instrument combined PHOTO TACHOMETER (RPM & REV). Two test modes: Rotation speed mode (unit: RPM) and count mode (unit: REV) Wide measure range and high resolution Display: 5 digital Large Backlit LCD Built in memory recall Max. Min. & Last value Stored RPM Test Range: 2 to 99,9999; RPM Count Range: 1 to 99,9999; Accuracy: ±0.05% ±1; Digit Resolution:0.1; RPM up to 1000RPM else 1 RPM; Sampling Time: 0.5s (Over 120 RPM); Detecting Distance: 50 to 500mm