Gasboard—8010 can work independently or apply in combination with opacity meter, exhaust gas analyzer or others. It adopts advanced DSP technology together with signal spectrum analysis approach to detect rpm. This instrument is high-precision, reliable, easy to install. It doesn't need vibration sensor or pincers for engine cylinder line. Only by connecting to power source system can it measure engine rpm. It is the only one proprietary RPM sensor based on auto cigar lighter in present China. Cigar lighter RPM sensor is not only applicable to gasoline vehicle but also applicable to diesel vehicle.