85mm Analog GPS Speedometer Odometer 0‑35Knots IP67 Waterproof 9‑32V with 8 Backlit for Marine Vessel Truck Item Type: GPS Speedometer Material: Stainless steel 316L bezel + anti-fog glass Install Diameter: Approx. 85mm or 3-3/8in Indication Range: 0-35knots,0-40mph Connection Method: Row insert Backlight Color: Red, green, blue, white, yellow, olivine, orange, purple,totally 8 kinds different backlight color, it will change automatically every 1 minute, or you can fix only one color that you like through press the gauge back set button Input Signal: GPS with antenna Working Current: : ≤100mA Operating Temperature: -30℃ - +75℃ Storage Temperature: -40℃ - +85℃ Grade Of Protection: IP67 Wiring: Red- positive; Blue - negative; Orange - backlight. Function Introduction: Press the gauge back "mode" button 3 second continuously,then you can select digital display mode set,press "mode" button again,you can select trip 1, trip 2 and COG 3 kinds different display method,but they can not show at the same time Trip 1: Short mileage, data will not be recorded after power off Trip 2: Short mileage data will be recorded after power off, users can hold the "set" button for 3-5 seconds to clear COG: Show azimuth angle,data will not be recorded Remarks: The unit of trip, total mileage and outta unit of dial are the same The below is odometer (ODO) function, it will record total mileage automatically Pls Note: For this speedometer, it is recommended that the buyer first connect the GPS antenna (excluding) and then connect the power supply (please be sure to connect the GPS antenna first and then connect the power supply in the order), otherwise it is easy to cause damage to the GPS module.