The DT-2234B tachometer is a non-contact digital laser tachometer designed for accurate rotational speed measurement in industrial, automotive, and aviation applications. It measures speeds from 5 to 99,999 RPM using a laser beam, making it ideal for delicate machinery or hard-to-reach areas where contact is not possible. The device features high accuracy (±0.05% +1 digit), auto-ranging, and selectable units (RPM, m/min, ft/min) for versatile use. Its memory function stores last, max, and min values, ensuring quick analysis. The lightweight, ergonomic design and large LCD display provide effortless operation, making it perfect for professionals working with automobiles, airports, ships, and industrial equipment.