RYSJM | 52mm GPS Speedometer 60KMH 0-60 Km/h Odometer Antenna with Trip Meter for Passenger Ships Tractor 12V 24V 7 Colors Backlight

Steps:1.Turn it on, then the meter star to search the signal and LCD will display "GP", if there is still not GPS signal after 3 mins , LCD displays "ER". 2. Blue wire short touch pwoer supply negative, change the color of backlight: Backlight changed in sequence re(default)→green→blue→white→yellow→cyan→purple→(automatic). 3. Automatic: Automatically switch the backlight color every 1 minute, Cycle switch according to the above sequence.Feature：- Backlight: 7 Color LED - Waterproof IP67 - Range: 30/60/80/200 - Signal: GPS - Fitment: for Car Marine Boat 12V 24V - Working Voltage:9-32VPackage：1X 52MM GPS Speedometer Gauge 1X Instruction 1X GPS Antenna