Tachometer with cutoff, it is simply an indispensable device for street racers who like to rev the engine to the cutoff. It will be especially useful in cars that do not have a standard tachometer. The scale is marked up to 10 thousand revolutions and we are already scared of what race cars have such tachometers. Bright blue illumination and red cut-off signal will keep you informed about what is going on with the engine. The device also memorizes your maximum rpm. Powered by 12V.