CAR AIR FUEL RATIO GAUGE OXYGEN SENSOR!
- 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 can show the number like 19 or 11（Represents the working status is LEAN or RICH)
When powered on 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
- 1 x Narrowband Oxygen Sensor
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