General description The 52mm Air Fuel Ratio Gauge features a LED digital display and comes with a narrowband O2 oxygen sensor, designed specifically for 12V racing applications. This set includes an air-fuel meter and an oxygen sensor, providing accurate readings for optimal engine performance. Technical specifications Part Number: 0258006028 Working Voltage: DC12V Signal Line Voltage: 0-1V Output Voltage: Maximum value 900mV / Minimum value ≤ 50mV Starting Time: ≤ 10s Heating Resistance: 8.5~9.5Ω Internal Resistance: 200~300Ω Material: Plastic + Metal Gauge Diameter: 52mm Compatibility and accessories Includes: 1 instrument, 1 oxygen sensor, 1 wiring harness Other information Note: Color may vary slightly due to lighting and display differences. Measurement allowed error: +/- 1-3cm.