Description: 100% brand new and high quality Protection grade is IP67, the whole body is completely waterproof. 316 Stainless steel bezel with curved glass. With polarity reverse protection function. The durability is good, and the seismic performance is good. Specification: Type: GPS Digital Speedometer Material: Metal and plastic Color: As picture shown Backlight?as the picture shown Indicating Range: 0~999Knots Working Voltage:9V-30V DC Operating temperature:-30~+75? Storage temperature:-40~+85? Working current:?100mA Installation Dimension: 85mm Function SOG:Speed Over Ground COG:Course Over Ground TRIP: Return zero when off electricity ODD: Accumulated odometer Touch the back button of the meter, we can switch the unit: knot,MPH?km/h and save automatically Installation's instructions 1.Make an 85mm (3 3/8") diameter hole on panel. Insure there is 55mm (2 3/16") space behind panel for gauge mounting. 2.Mount gauge in 85mm (3 3/8") diameter hole. Twist back cover on after adjustment. 3.Base on wiring diagram to do cable connection. Gauge can be linked to 12/24V power directly. Connection 1. Black: Ground(-) 2. Red: 9-30VDC Package Includes: 1 Piece GPS Digital Speedometer
