52mm/85mm TFT Screen Speed Gauge Digital GPS Speedometer Mph Knot Km/h GPS Antenna For Motorcycle Marine Boat Car 12V 24V ,Easy to Install

A speedometer or speed meter is a gauge that measures and displays the instantaneous speed of a vehicle. Now universally fitted to motor vehicles, they started to be available as options in the early 20th century, and as standard equipment from about 1910 onwards.

Specifications:

The yellow line intermittently contacts the negative electrode, which can realize the switching of

knot, MPH, km/h units, and automatically save.

Connection

1 Black: Ground(-)

2 Red: 9-32VDC

3 Yellow: Switch unit

Package Includes:

1x GPS speedometer

1x GPS Antenna

1x Installation Instruction

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