Digital Tachometer. 1.0-8000RPM 2.direct-viewing,high brightness; 3.convenient to use,easy to install, 4.reliable quality digital ... install,convenient to use, stable performance, reliable quality, etc. (3) complete with sensor:1.Range: 0-8000Rpm.2.power input:8~32V ... .3.working temperature: -10~80°c;4.display device: digital display ...