[RM] 85 mm GPS Marine Speedometer 0-60 Nautical Miles with 7-Color Backlight GPS Odometer for Marine Yacht

Suitable for all vehicles, boats, and off-road vehicles\nSignal comes directly from the satellite signal receiver (GPS speed sensor)\nThe gauge has the advantages of high precision, quick location confirmation, and short start-up time.\nIP67 waterproof and dustproof rating\nStepper motors are used for the full range of stepping gauges, a great feature with its lower power consumption, longer lifespan, higher precision, etc.\nInstallation:\n1. Power it on, then it will search for the signal and the LCD will display \"gps---\", if there is still no GPS signal after three minutes, the LCD will display \"Err\".\n2. Short press the button to change the backlight color: The backlight changes in sequence: red (default) green blue white yellow cyan purple (automatic). Automatic: Automatically switch the backlight color every 20 seconds, cycle the switch according to the above sequence.\nWiring\n1 Black: Ground (-)\n2 Red: 9-30VDC\n3 Yellow: Backlight\nIndication range: 0-60\nColor: Silver\nBacklight: 7 colors\nMaterial: Stainless steel + plastic\nSize: 85 mm\nPackage contents:\n1 x GPS speedometer;\n1 x GPS antenna\nOnly the above package content, other products are not included.\nNote: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3 cm.