3 Gauge Set 85mm GPS Speedometer 80 MPH Tachometer Fuel/Pressure/Water Temp/Volt. 3 Gauge Set 85mm GPS Speedometer 0-80MPH Tachometer for Car Boat Waterproof. PLEASE ATTENTION ABOUT THE TACHOMETER. (DOESN’T FIT FOR IGNITION COIL SIGNAL). If work with gasoline vehicles and the signal is the ignition coil signal, it may be necessary to use a speed adapter. 4 IN 1 Gauge Input parameter(The sensor will be not included). Oil pressure sensor: 10184ohms. Fuel level sensor: 0190ohml24030ohms(can be adjusted, default 0-190Ohms). Operating voltage: 9 to 32 Volts(DC). Engine oil pressure: 0150PSI. E-F, 0-190ohms 240-33ohms(Can be adjusted). Degree of Protection lp67. Default input signal is 0190ohm, when 7-Green connect to Ground, input signal change to 24033ohm. Default input signal is 24033ohm, when 7-Green connect to Ground, input signal change to 0190ohm. Material: Stainless Steel 316L Bezel + Anti-fog Glass. Install Diameter: f85mm or 3-3/8. Working Voltage: 932V DC. Size: 12x8x12cm / 4.72×3.1×4.75 inch. IP67 waterproof and dustproof grade. Backlight:7 Colors Backligt. Engine hours: 0.0-99999.9H. Waterproof and dustproof grade IP67. Backlight :7 Color backlight. Indicating Range: 06000 RPM. 1 x 85mm 4 in 1 Multifunctional Gauge. 1X 85mm GPS speedometer. 1 x Installation Instruction.