... martials, using high-quality MCU as the core part, with digital display tube of high-brightness; easy to 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 ... tube of high brightness. Other Tachometer RPM: 0-3000Rpm/0-2000/0-1500/0-1200/0-600/0-300.etc For more details /information,pls Contact ...