【Range】Tachometer Readings from 0-8000 RPM. The RPM tachometer monitors the engine's rotational speed and displays the RPM data. Make sure your engine stays in good condition
【Funtion】Install the 85mm (3-3/8 inch) RPM tachometer by opening a matching 85mm hole in the panel, with a depth of 70mm (2-3/4"), then inserting the gauge
【Backlight Color】 Bright LED red backlight color, Red Illuminated needle. Whether it's under the bright glare of daylight or the low-light conditions of nighttime driving, ensuring clear visibility in all driving conditions
【Features】Tachometer gauge fit for 12V/24V Car/Boat/Marine Gasoline Engine, suitable for 4/6/8/10/12 cylinder engines. The AUTO RPM gauge display precision and stability, low power consumption
【Package】Includes Tachometer, Wiring Harness, Installation Instructions. NOTE: Please set the appropriate speed ratio according to the number of cylinders in your car. Setting the wrong speed ratio will cause significantly inaccurate RPM readings or unstable/jumping RPM display