- The digital gauge provides real-time monitoring by displaying voltage for the first minute after powering on, then automatically switching to Air Fuel Ratio. It will revert to voltage display only when there are fluctuations, ensuring you stay informed about your vehicle's performance. - Designed for 12-volt gasoline vehicles, this gauge is an essential tool for optimizing engine efficiency and performance. - Key Features: - Dual Functionality: Monitors both voltage and Air Fuel Ratio, providing critical insights into your vehicle's operation. - Compatibility: Specifically engineered for 12-volt gasoline vehicles, ensuring seamless integration and reliable performance. - Professional Installation Recommended: To ensure optimal functionality, it is advised to have this gauge installed by a professional. Note that installation guidance for connecting the O2 Oxygen sensor is not provided. - Practical Applications: - Ideal for performance tuning: Helps you fine-tune your engine settings to achieve the best fuel efficiency and power output. - Essential for diagnostics: Quickly identify voltage drops or fuel mixture issues that could affect your vehicle's performance. - Useful for enthusiasts: Perfect for car enthusiasts who monitor their vehicle's performance during modifications or racing. Make informed decisions about your vehicle's performance with this reliable digital gauge, ensuring you maintain optimal efficiency and functionality on the road.