Classic Instruments VS194BD Air/Fuel Ratio Gauge

Classic Instruments Digital Air Fuel Ratio gauge provides the fastest response with patented technology. Its slim depth increases its application base, and the single-board design adds greater durability. Additional features include: X-Series Wideband UEGO AFR Controller Gauge, the fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitors' wideband AFR controllers, patented X-Digital wideband technology (Patent 9,575,030), includes FAE oxygen sensor and wideband UEGO controller, factory calibrated resistor that does not require free-air calibration, but allows for free-air calibration as the sensor ages if desired, compatible with vehicle/system voltages up to 16V, 0-5V, RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders, can display AFR values in hundredths of %, 52mm gauge diameter and slim 0.825 gauge depth, gauge cup depth only .200 deep, auto dimming feature, user configurable display via buttons on the gauge face for changing AFR values, and 3- or 4-digit display, locking connectors, made in the USA. WARNING: This product can expose you to Lead which is known to the State of California to cause cancer or birth defects or other reproductive harm.