12/24V 85mm 4000RPM Waterproof Variable Backlight Digital GPS Gauge Speedometer Odometer Marine Boat

Specification: Product Name: GPS Speedometer Material: 316L stainless steel Bezel, Plastic housing Color: Black Face,Silver Frame Operating Voltage: 9~32VDC Operating current: 100mA(24V); Operating temperature: -30~+75 Storage temperature: -40~+85 Diameter: 85mm Speed Ratio Adjustment: 1)Press the Set button (less than 1 second) to change the backlight color: Backlight changed in sequence: red (default) green blue white yellow yellow green orange Purple (automatic). Automatic: As the gauges was set with the automatic the backlight will be off for 2 seconds then lighten up, And will switch the backlight color as above sequentially. 2)Press the black rubber Mode button on the instrument for 3 seconds, then it will enter into the speed ratio setup mode, if the button is released for 3 seconds, it will exit the speed ratio setup mode, and automatically retain the setting data. 3)As the tachometer is in setting mode,press the button to select the speed ratio required,dey as down below form.For instance,the pointer point at 1000rpm is for 2 cylinder engine. Note: 1. Please allow 1-2mm error due to manual measurement.Pls make sure you do not mind before you bid. 2. The color may have different as the difference display,pls understand. Package Included: 1 X GPS Speedometer 1 X Wiring Harness 1 X User Manual