Name:Car LCD 2 in 1 Gauge ( Speed Meter + Odometer Gauge ). Features: Speedometer. Other Part Number: auto tuning.Item Width: 85mm. Manufacturer Part Number: Speedometer. Placement on Vehicle: Front. Item Height: 85mm.Item Length: 85mm. GPS Car Speedometer: LCD Instrument Panel. Waterproof: Speed Odometers Gauge.Feature: Alarm LCD Gauge. Instrument Panel: Odometer Gauge Meter. Working voltage: 12V/24V. Measuring range: 0M160M. Measurement accuracy: 1MWorking environment temperature: 20 C 50 C, Working environment humidity: 45% 75% RH. Measuring range: speed 0160km/hMileage: 0999999.9kmOverspeed alarm: driving speed set valueOverspeed alarm value: 80km / hWhen overspeeding, the upper right alarm displays a prompt, no sound promptMagnetic pairs: value is "8"Speed : the value is 1:624Measurement accuracy: 0.1%Installation and use:The black wire is connected to the of the power supply (+), the wire is connected to the negative of the power supply (),and the odometer senses wires: the red wire is connected to the + on the sensor, the black wire is connected to the on the sensor, and the yellow wire is connected to the G.X.S on the sensor.The operation is as follows:First, the car.Second, short press for 1 second, the mileage shows ODO and TIPA rotation, select ODO.Third, press and hold for 10 seconds to 15 seconds to display the mobile phone number.Fourth, when the vehicle starts and exercises to 60 yards, press 1 second to display 000000 to enter the setting function. Press 2 seconds, the setting is completed.Note:1.Professional Installation Is Highly Recommended!2. High speed with a quick response !Colour: Blackmaterial: plasticPackage Contents:1 x Car LCD 2 in 1 Gauge ( Speed Meter + Odometer Gauge )Only the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/ 13cm.