Description:HUD short for Head Up Display. It displays driving data on the front windshield such as speed, rpm, fuel consumption, water temperature, voltage; avoiding drivers become dangerous because of watching the instrument while driving. Drivers can read the driving information instantly, and can always keep the best state on the way with HUD.Main display information:1.Brightness sensor2.Water temperature icon3.Water temperature scale4.Engine RPM scale5.Over speed alarm6.Gear display7.Multi-function value8.Icon for engine RPM,inlet pressure,water temperature,clock,voltage,ignition angle,acceleration time for 100 Kilometers9.Throttle position and fuel consumption10.Multi-function value 11.Buzzer mark,engine fault,fatigue alarm,voltage alarm,data transfer 12.Speed unit 13.Calls and SMS alerts(this function is not opened now)HUD installation:1. Know your vehicle brand,HUD work for cars with OBDII agreement or EU OBD agreement. Open the engine hood and find the sticker below it (see the below picture 1), if it has words like OBDII CERTIFIED, then it can be installed. 2. Find out the 16 pin diagnostic link (see the below picture 2) of the vehicle and connect it well with OBDII connecting line.Specification:Environment temperature: -40c- + 80c atmospheric pressure 86-106KPa<;= 60dB (A)Alarm sound level: "= 30dB (A)Working voltage: 9V 16Vdc (12Vdc / 400mA)HUD size: 150*85*14(mm)HUD Weight: 280gPackage included:1 x HUD1 x OBD Cable1 x Reflecting Film1 x Anti-slip Pad1 x English User Manual

Engine RPM alarm can help to fuel-efficient by shifting, and is good for novice. Automatic and manual brightness adjustment mode,driving without glare.Welcome to your inquiry. Display Mode: default mode, high-speed mode, automatic mode. Kilometer and Mile can be switched freely. Over speed alarm include single-speed alarm and four-stage alarm. Auto Power ON/OFF - HUD start and off with vehicle started and shutdown, effective protection of the car battery;retaining the manual switch mode,more easy to control HUD. Rich Contents - Speed, engine RPM,water temperature,voltage, fuel consumption, engine fault code, Gear display, Throttle position, Calls and SMS alerts. Universal HUD Display - Available for cars with OBD2 and EUOBD port(Car automatic diagnosis system), plug and play. Screen 5.5 inch HD display, easy for read.