Introducing our advanced Digital Tachometer, designed for precision and ease of use in a variety of professional settings. This versatile tool measures contact speeds ranging from 1 to 19,999 RPM and photoelectric speeds from 1 to 99,999 RPM, making it ideal for mechanics, engineers, and DIY enthusiasts alike. One of the standout features of this tachometer is its remarkable measurement accuracy of ±0.02% ±2 digits. Whether you're monitoring the performance of an engine or calibrating machinery, you can trust that the readings are reliable. The resolution of 0.1 RPM ensures you capture even the slightest changes in speed, providing you with detailed insights to enhance your projects. Designed for user convenience, our tachometer boasts a backlight function, allowing you to easily read measurements in low-light conditions. The maximum, minimum, and average value functions help you analyze data effectively, while the data retention feature ensures you won't lose critical information. With a sampling time of just 0.5 seconds, you can quickly gather data without delays. Built to withstand a working temperature range of 0 to 50°C, this tachometer is reliable in various environments. Its compact size of 236*72*35mm and lightweight design (218g) make it portable, so you can carry it wherever your tasks take you. Please note that it operates on a 9V battery (not included), ensuring you have the power you need when you need it. Packaged in a stylish color box, this Digital Tachometer is not just a tool; it's an investment in your efficiency and accuracy. Elevate your work with a tool that delivers performance and functionality, designed for both professionals and hobbyists. Make your measurement tasks easier and more efficient today!