Name:Car LCD 2 in 1 Gauge ( Speed Meter + Odometer Gauge ). Special Features: Speedometer. Other Part Number: auto tuning.<br> Item Width: 85mm. Manufacturer Part Number: Speedometer. Placement on Vehicle: Front. Item Height: 85mm.<br> Item Length: 85mm. GPS Car Speedometer: LCD Instrument Panel. Waterproof: Speed Odometers Gauge.<br> Feature: Alarm LCD Gauge. Instrument Panel: Odometer Gauge Meter. Working voltage: 12V/24V. Measuring range: 0M-160M. Measurement accuracy: 1M<br> Working environment temperature: -20 C - -50 C, Working environment humidity: 45% - 75% RH. Measuring range: speed 0-160km/h<br> <br> Mileage: 0-999999.9km<br> Overspeed alarm: driving speed set value<br> Overspeed alarm factory value: 80km / h<br> When overspeeding, the upper right corner alarm displays a prompt, no sound prompt<br> Magnetic pole pairs: factory value is "8"<br> Speed ratio: the factory value is 1:624<br> Measurement accuracy: 0.1%<br> Installation and use:<br> The black wire is connected to the positive pole of the power supply (+), the black and white wire is connected to the negative pole of the power supply (-),<br> and the odometer senses three 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.<br> The operation is as follows:<br> First, start the car.<br> Second, short press for 1 second, the mileage shows ODO and TIPA rotation, select ODO.<br> Third, press and hold for 10 seconds to 15 seconds to display the mobile phone number.<br> 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.<br> Note:<br> 1.Professional Installation Is Highly Recommended!<br> 2. High speed stepper motor with a quick response !<br> Colour: Black<br> material: plastic<br> <br> Package Contents:1 x Car LCD 2 in 1 Gauge ( Speed Meter + Odometer Gauge )<br> <br> Only the above package content, other products are not included.<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.