This inclinometer is an automotive slope meter with a built-in multi-axis gyroscope. It supports 99% of the car models in the market. It can measure the vehicle's pitch angle, roll angle, driving mode selection and safety alarm prompts, which greatly improve driving safety and provide a better journey experience.Feature:Pitch angle: Real-time measurement of the vehicle pitch angle during driving, the range is -40~ +40 between upside and downside.Roll angle: Real-time measurement of the vehicle roll angle during driving, the range is -40~ +40 between left-side and right-side.Driving mode selection: City driving mode and off-road mode can be selected.Safety alarm prompts: When the pitch angle and roll angle of the vehicle exceeds the default alarm value, the device will iue a safety alarm "beep"Product Highlights:1. Intelligent Inclinometer Off-road 4X4 Car Acceories.2. Plug & Play: Start with the car and turn off with car's engine off.3. Easy installation: with Cigare lighter, can work on all vehicles.4. Built-in Slope Sensor: for pitching angle, roll angle measurement.5. Driving mode switch: Off-road driving mode & city driving mode are available.6. Roll angle reset.7. Built-in light sensor, can adjust the brightne automatically.8. Display data: Pitch Angle, Roll Angle, Voltage, Driving mode.9. Alarms: Tilt Angle Danger alarm, Pitch Angle Danger Alarm.Specification:Power supply: DC 10V~30VOperating temperature: -40C~80CPitch angle/Roll angle:-40~40Voltage measurement range: DC 5V~ 30VVoltage measurement accuracy: 0.5vWeight230gProduct Size127*25*60mmMain function:Driving mode switch: Pre and hold the function select button for 5s to enter the o-road driving mode and city driving mode selection interface, and then pre and hold for 5s to save the settings.Roll angle reset: Short pre the On/O button to reset the roll angle and pitch angle.Brightne adjustment: short pre the function select button to adjust the brightne.Package Include:1pc* M50 smart inclinometer1pc* Cigare lighter power cable1pc* Refitted power cable1pc* Holder1pc* User manual