Air Fuel Ratio Gauges

Wideband O2 sensors have a 0-5 volt output range and operate differently than narrowband 0-1 volt sensors. Please check your specific application BEFORE you make a purchase.

Narrowband sensors typically operate within a narrow voltage range, oscillating between rich and lean states. In contrast, wideband sensors utilize advanced circuitry and a broader range of voltages to provide a finely grained output, accurately depicting the air-fuel ratio in real-time.