Digital tachometer with wide measuring range (50-19999 rpm) and LCD speedometer

This device is a digital tachometer with contact sensor, characterized by stable performance, high reliability, and safety. Its heart is a compact, high-performance integrated chip. The tachometer displays speeds from 50 rpm to 19,999 rpm. The LCD display is backlit, ensuring readability even in low-light conditions. Features: This digital tachometer with contact sensor offers stable performance, high reliability, and safety. Ergonomic design; the housing is manufactured using a modern molding process. The housing is elegant and compact and complies with EU CE safety standards and RONS/REACH environmental regulations. Fast integrated chip. Supports 100 data records storage, data retrieval, unit conversion, and maximum, minimum, and average measurement. Available units: m/min, m/s, ft/min, ft/s, in/min. Backlit display; the LCD backlight ensures data readability even in the dark. Supports speeds up to 19,999 rpm: Accurately displays speeds up to 50 rpm. Accuracy: ±(0.03% + 2 days). Features a low battery indicator, 30-second auto power off, and low voltage indicator. Compact and easy to use with one hand. This intuitive and low-maintenance tachometer offers excellent performance. Equipped with 5 contact rollers for easy range adjustment. Widely used in laboratories, automotive mechanics, mechanical engineering, motors, etc. Speed range: 10,000–19,999 rpm. Accuracy: ±(0.03% + 2 days). Measuring distance: Not applicable. Auto power off: 30 seconds. Data storage: 100 sets of data. Functions: maximum value, minimum value, average value, data hold function, low battery indicator, auto power off. Unit selection: m/min, m/s, ft/min, ft/s, in/min. English: Power supply: 4 x 1.5V AAA batteries (not included). Altitude: <2000m. Operating temperature: 0°C ~ 40°C (32°F ~ 104°F). Relative humidity: ≤80% RH. Item size: approx. 165 x 60 x 28mm. Item weight: approx. 146g. Package weight: approx. 305g. Package size: approx. 19 * 11 * 6cm / 7.5 * 4.4 * 2.4in. Package contents: 1 * digital speedometer, 2 * measuring wheels, 2 * measuring probes, 1 * extension rod, 1 * carrying case, 1 * user manual (English)