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 issue a safety alarm "beep" Product Highlights: 1. Intelligent Inclinometer Off-road 4X4 Car Accessories. 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 brightness 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~30V Operating temperature: -40C~80C Pitch angle/Roll angle:-40~40 Voltage measurement range: DC 5V~ 30V Voltage measurement accuracy: 0.5v Weight230g Product Size127*25*60mm Main function: Driving mode switch: Press and hold the function select button for 5s to enter the o-road driving mode and city driving mode selection interface, and then press and hold for 5s to save the settings. Roll angle reset: Short press the On/O button to reset the roll angle and pitch angle. Brightness adjustment: short press the function select button to adjust the brightness. Package Include: 1pc* M50 smart inclinometer 1pc* Cigare lighter power cable 1pc* Refitted power cable 1pc* Holder 1pc* User manual