HD 52MM/85MM TFT Screen Digital GPS Speedometer Odometer With Antenna MPH Knot Km/h Three Unit For Car Boat Marine 12V/24V Package 11X 52mm Gauge Holder or 1X 85mm Gauge HolderPackage 11x GPS Speedometer 1x GPS Antenna 1x Installation Instruction52mm Technical parameters:* Operatingvoltage: 9~32VDC *Operating current: 100mA *Operating temperature: -20~ 70 *Storage temperature: -30~ 80 *TRIP:Single mil eagezero power down. *ODO:Accumulated mileagepower outage data can be saved.Connection:1 Black: Ground(-) 2 Red: 9-32VDC 3 Yellow: Switch unit The yellow line intermittently contacts the negative electrode, which can realize the switching of knot, MPH, km/h units, and automatically save.Wholesale and drop shipping are both welcomedFor wholesale, we will offer the discount or free express shipping which only takes 3-7 days to arrive. For drop shipping, We could send the goods to your customers directly and won t leave information about us if youd like to.85MM GaugeFeatures: - GPS SOG: Speed Over Ground: 0-600km/h - ODO: odometer: 0-999999km (can be adjusted by the back button.) - TRIP: 0-999.9km (Return Zero When off electricity.) - COG: Course Over Ground (Orientation Pointer) - Battery voltage: 9~32VDC - Three unit can be swicthed: knot; mph; km/h - Degree of Protection: IP67 - Backlight: TFT Screen - GPS signal - GPS antenna length 3 meter Package Includes: 1*GPS Speedometer 1*GPS Antenna 1*Multi-plug socket 1*Instruction52mm Gauge