Product Features: 

-Suitable for all cars, tractors, vans, vessels, boats, yachts, etc. 
-The signal comes directly from the satellite signal receiver (GPS Speed Sensor) 
-The gauge has the advantages of high precision, quick location confirmation and short start up time. 
-IP67 waterproof and dustproof grade 
-Stepper motors used for full range of stepping gauges, great feature with its less power consumption, longer life, higher precision, etc. 
-With curved glass (with anti-fogging function) 
-With ultra-wide working voltage design( long-term operating voltage: 9-32V, Maximum up to: 36V (≤ 1 min)). tractors
 
Technical Data: 
-Fixing dimension: 85mm(3-3/8 inches) 
-Indicating Range: 0-35MPH 0-55KM/H
-Faceplate Color: black or white faceplate with Stainless Steel. 
-Working Voltage: 9-32VDC(12VDC/24VDC) 
-Backlight: Red Green Blue White Yellow Orange Purple Light Green or automatic

Functions: 
-Needle shows current speed; 
-Led window shows: TRIP/COG(choose anyone) and ODO(cannot be reset）
-TRIP---TRIP01(Default) one-trip mileage which will come back to 0 after power off, TRIP02 one-trip mileage which accumulates after power off, but you can press "Set" button  for 3-5 seconds to clear the data. 
-COG---course over ground 
-ODO---recording total mileages automatically and cannot be reset 
-Connection: Blue wire--Negative/Ground, Red wire--Positive, Orange wire--Positive(lighting wire) 
-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. 

Package Includes: 

   1x GPS speedometer
   1x GPS Speed Sensor 
   1x Multi-plug socket 

   1x Installation Instruction