WIDEBAND AIR FUEL RATIO AFR GAUGE WITH O2 SENSOR is a high-performance gauge that monitors and tunes your vehicle’s air to fuel ratio, resulting in multiple benefits. These benefits include maximized power and engine performance, reduced emissions, and higher fuel economy by allowing you to carefully map out your vehicle’s air to fuel ratios throughout the range of RPM and manifold pressure.
The included stepper motor ensures all needle movement is incredibly smooth and all gauge readings are extremely accurate. The adjustable high and low warning functions will alert you visually or with an optional audible tone, ensuring your vehicle’s air/fuel mixture is running at optimum levels.
When powered on the digital gauge will read the voltage for 1 minute and switch to Air Fuel Ratio. It will only switch back to voltage if there is a decrease or increase
Highly Recommended professional installation
The output voltage of this wideband O2 Oxygen sensor is only two: 0.1V and 0.9V, so it only can show the working status: "LEAN" and "RICH"，the digital display of this air-fuel ratio gauge will only show the number like 19 or 11（Represents the working status is LEAN or RICH)
Wideband O² Compatible with ALL fuel types
Ability to calibrate O² sensor for maximum accuracy