Features: -Suitable for all vehicles and off-road vehicles -The signal comes directly from the satellite signal receiver(GPS Antenna), don't need other speed sensor. -The gauge has the advantages of high precision, quick location confirmation and short start up time. -IP67 waterproof and dustproof grade -Reverse polarity protection and anti-fogging performance -Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. Specifications: -Application:Universal fit for Motorcycle/ Boat/Truck/Bus/Car -Electronic Speedometer (stepper motor) -No Mechanic Sensor, get speed signal from GPS -Speed 0 and show accurate speed in tunnel with the help of accelerometer -GPS Blind Area Odometer Compensation -OverSpeed Buzzer Alarm -Indication Light (Left, Right and High Beam -Installation Diameter: 85mm (3 3/8") -Speed Range:0-200KM/H -RPM Range:0~8000RPM -Mileage Range:0-99999.9miles -Working Voltage: 12V/24V -Working temperatures: - 40 to 85C -Protection rank:IP67 Waterproof -Reverse polarity protection and anti-fogging performance Connection: Black: Ground(-) Red: 9-32VDC(+) Blue: RPM Signal Yellow: Backlight White: High Beam Brown: Buzzer alarm(+) Green: Buzzer alarm(-) Yellow: Left Turn Gray: Right Turn Package Included(as picture): Package 1 Included : 1x GPS speedometer with tachometer 1x GPS Antenna 1x Multi-plug socket 1x Installation Instruction Package 2 Included : 1x 85mm Gauge Holder Package 3 Included : 1xTacho Sensor