Features: Ensure best engine Performances with our Digital LED Blue Light Air Fuel Ratio Gauges, featuring a high Precisions oxygen sensor that provide real time, accurate air fuel ratio data. The Gauges boasts a clear digital LED display with blue lighting for enhances nighttime visibility, and its high temperature resistance ensures reliable operation in various driving conditions. Suitable for car modification enthusiasts, racings athletes, and professional repair technicians who require precise monitoring to enhances vehicle Performances and efficiency. Perfect for use in modified car races, daily driving, or automotive repair shops, providing essential data for Performances adjustments and fault diagnostics. With its design and 0 to 1V output signal compatibility, this Gauges not only improves dashboard aesthetics but also seamlessly integrates with various diagnostic devices for comprehensive vehicle analysis. Specifications: Material: metal Diameter: about 57mm/2.24inch Working Voltage: 12 V Signal Line Volatge: 0-1V Output Voltage: maximums. Value≥900mV / minimum. Value≤50mV Response Time: (600mV-300mV)≤100ms Response Time: (300mV-600mV)≤100ms Starting Time: ≤10s Heating Resistance: 8.5-9.5Ω Internal Resistance: 200-300Ω Mounting Diameter: 52mm/ 2in Package Includes: 1 set Air Fuel Ratio Gauges note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item.