Multifunction: This boat speedometer is a 6-in-1 with alarm design, including: GPS Speedometer, Tachometer, Voltmeter, Fuel Level, Water Temp, Oil Pressure. You can monitor multiple data of your car/boat with this gauge.
Unit switching: Press the button first, then power on, and then enter the parameter selection mode. You can select the 0-190ohm(European) or 240-33ohm(American) level sensor. switch the units of speed (MPH,km/h or knot), water temperature (℉ or ℃) and pressure (psi or bar) with the unit button.
Marine tachometer installation: Diamete: Open a 85mm (3 3/8") and 55mm( 2 3/16”) depth hole to put the boat tachometer into it, easy to install.
Sales Service: The gps speedometer car with TFT screen, marine speedometer is IP67 waterproof and anti-fogging protection. If you have any qustion about this 6-in-1 marine fuel gauge, please contact us, we provide you with a satisfactory solution.