The UT370 series digital tachometer is a series of photoelectric digital tachometers with stable, safe, and reliable performance. The overall circuit design is centered around a microcontroller, with photoelectric speed sampling and processing. The unique appearance design makes it a high-performance tachometer. This tachometer can be used to measure rotational speed and count. The speed range is from 10 to 99999r/min; The counting range is from 0 to 99999. Suitable for schools, factories, laboratories, automotive maintenance testing and other fields