1. Read the air‑fuel mixture from 10 to 20 AFR, rich: 18‑20 AFR, optimal: 12‑18 AFR, lean: 10‑12 AFR.
2. Monitoring the air‑fuel ratio of the car, allows you to change the air‑fuel ratio to maximize power and engine performance, reduce emissions, and improve fuel economy.
3. Hhighly visible, it can be easily viewed from all angles under any lighting conditions.
4. Easy to install, including wiring harness and necessary installation hardware, no other sensors are required.
5. 2in in diameter, black dial, luminous red needle and black face gauge. Strong compatibility, universally used in cars, SUVs, vehicles, automobiles, etc.

Specification:
Item Type: Air Fuel Ratio Gauge
Material: ABS
Color: Black
Diameter: Approx. 52mm/2in
Readout: Blue digital LED
Power: 12V/Maximum 0.3A
Visual Angle: ≤180°
With red, green, yellow LED
Accurate electronic reading, 20 LED showing
Fitment: Universal fit for most of cars
How to Use:
1. Connect the power cord to the meter.
2. Black represents the negative pole, it can be used when connected to the negative pole of the vehicle.

Package List:
1 x Air Fuel Ratio Gauge
1 x Wire Harness
1 x Manual

Note:
Professional installation is highly recommended.