Depo Gauges Wideband Air/Fuel Ratio Gauge 52mm with W/4.9 Bosch Sensor and 0-5V Analog Output and LAMBDA Value

 Digital Blue LED Display
Blue 30 Bar LED Outer Display (Red-Yellow-Green)
Combining Controllers with Gauges
LAMDA Value
With Bosch 4.9 LSU Sensor
Accurate AFR Display down to 0.01 AFR