Usage Tips:Digital Speed Odometer High Accuracy DC 932V GPS Speed Gauge for Boats Yachts Outboard Engines Feature:1. Function: Display longitude, latitude, miles, single mileage and accumulated mileage. With backlight, it is convenient to view by boat at night.2. IP67 Waterproof: Stainless steel front cover bezel and anti fog curved glass cover, which can be used normally even in acid, alkali and humid environments.3. Anti Fog Function: High transparency PC and curved glass structure form a double layer of anti fog, and the anti fog performance is much higher than that of single layer glass coating anti fog agent.4. High Accuracy: The LCD screen is adopted, which is characterized by high accuracy, strong universality, reliability, stability, and ease of use.5. Wide Working Voltage Design: Working voltage 932V, low power consumption, long life, short starting time It is very suitable for ships, fishing boats, yachts, outboard engines and other kinds of water vehicles.Specification:Item Type: GPSSpeedometerMaterial: ABS, metalInstallation Size: Approx. 52mm/2.05inFunction: Display longitude, latitude, miles, single mileage and accumulated mileageWorking Voltage: 9-32VWorking Current: 100mAOperating Temperature: - 20 -+70 Storage Temperature: - 30 -+80 Display Mode: LCDDisplay Range Of Speedometer: 0-999.9Total Mileage Display Range: 0-999999Trip Mileage Display Range: 0-999.9Applications: Used in motorhomes, yachts, fishing boats, ships, engineering machinery, agricultural machinery, modified vehicles, etc.Package List:1 x Speedometer1 x GPS1 x Manual How to use: Openaholewithadiameterof52mmontheinstrumentmountingplateMakesurethereisatleast55mmspacebehindtheinstrumentpanelWiring:1.Blackwire:powernegativepole()2.Redwire:932VDC3.Yellowline:switchspeedunit