Odometers
Note:
1:Highly Recommended professional installation(Not teach you how to connect the O2 Oxygen sensor),the O2 Oxygen sensor is not universal , only for the Specific models(Detailed description below ):
2:Narrowband oxygen sensor O2
OEMref part number :30921023750 39210-23750.

2:The output voltage of this 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 statu is LEAN or RICH)
Other Parameters:
1:Digital Volt & Digital LED Air Fuel Ratio Gauge
AFR Readout Between 2010 AFR
Volt Reads Between 8 16 Volts
Blue Digital Read out
Lens
Fit: 12V gas oil Cars
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
Package included:
1 x Air Fuel AFR Gauge
1 x Narrowband Oxygen Sensor
1 x English Manual
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High-concerned chemical : None
Placement on Vehicle : Narrowband O2 Oxygen Sensor REAR LOWER
Country/Region of Manufacture : CN
Interchange Part Number : Car Meter Auto Gauge
Special Features : 52mm Digital Air Fuel Ratio Gauge with Narrowband O2 Oxygen Sensor
Item Weight : 0.6KG
Item Height : 52mm
Item Width : 52mm
Item Length : 52mm
Part Number : BX101457+BX100832
Origin : Mainland
Material : ABS+Aluminum
Gauge type : 52mm Car Air Fuel Ratio Gauge Electrical Digital
Face : Smoken Lens
AFR Readout : Between 20-10 AFR
Sensor : Narrowband O2 Oxygen Sensor REAR LOWER
Sensor Fit : For 03-10 2.0L
Air Fuel Ratio Gauge fit : 12V Car
number of sensor : 39210-23750 /3921023750