Name:Car LCD 2 in 1 Gauge ( Speed Meter and 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: 0M-160M. Measurement accuracy: 1M Working environment temperature: -20 C - -50 C, Working environment humidity: 45 percent - 75 percent RH. Measuring range: speed 0-160km/h Mileage: 0-999999.9km Overspeed alarm: driving speed set value Overspeed alarm value: 80km / h When overspeeding, the upper right alarm displays a prompt, no sound prompt Magnetic pairs: value is "8" Speed : the value is 1:624 Measurement accuracy: 0.1 percent Installation and use: The black wire is connected to the of the power supply (and), the wire is connected to the negative of the power supply (-), and the odometer senses wires: the red wire is connected to the and 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: Black material: plastic Package Contents:1 x Car LCD 2 in 1 Gauge ( Speed Meter and 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 1-3cm.