ELING Universal Digital GPS Speedometer Speedo Gauge For Car Motorcycle Truck Yacht Vessel 2 inches 9 32V

Open a 52mm dimension and 70mm depth hole, put gauge into It and fasten Hook up easily, 3 wires connection(power, ground, lighting). This is complete unit, can work directly with gps sensor together, not need other sensor cables. After connection, it takes about 30 seconds to get signal in the first time, but less than 3 seconds after that. It gets quicker under a clear view of the sky. Sometimes if signal is missing, pls. reconnect all wires and restart it. It shows Current Speed and ODO, Press the back button to adjust unit(KM/H. MPH, KNOTS) Red Backlight, 9-32VDC(12VDC/24VDC) Working Voltage, 100% Waterproof and anti-fogging protection