FEATURES:<br> X-Series Wideband UEGO AFR Controller Gauge were fastest responding wideband air/fuel ratio controllers in an independent test vs. 17 competitor wideband AFR controllers<br> Includes Bosch 4.9LSU wideband UEGO sensor<br> Factory calibrated resistor does not require free-air calibration, but technology allows for free-air calibration as sensor ages if user desires<br> Compatible with vehicle/system voltages up to 16V<br> 0-5V & RS232 output for data logging and feedback control, AEMnet (CANbus) for data logging and daisy-chaining multiple controllers up to 16 cylinders<br> Can display AFR values in hundredths of %<br> 52mm gauge diameter and slim 0.825 gauge depth<br> Gauge cup depth only .200 deep!<br> Auto dimming feature<br> User configurable display via buttons on the gauge face for changing AFR values, Lambda and O2%, and 3- or 4-digit display<br> Black bezel and black dual faced faceplate included (gauge only, silver bezel/white gauge option sold separately, PN 30-0300-ACC)<br> Locking connectors