The PLX Wideband AFR (UEGO) multi gauge combo combines an accurate, fast response wideband AFR (Air Fuel Ratio) controller with the world's most advanced 2 1/16" gauge (52mm). The DM-100 OBD Multi Gauge is a powerful scan tool, code reader, and performance gauge all in one. It is compatible with 1996 and later vehicles and connection is made through the onboard diagnostic port (OBDII / CAN). The PLX Air Fuel Ratio Sensor Module accurately measures the wideband air fuel ratio (AFR) of any internal combustion engine. It includes a Bosch LSU4.2 wideband oxygen sensor. The wideband controller (SM-AFR) works with gasoline, bio diesel, ethanol, methanol, E85, LPG, and CNG. It includes two analog outputs (wideband 0-5V, and narrowband 0-1V) for interfacing with 3rd party devices and one digital serial output for interfacing with the DM-6 gauge and other Multi Gauges. The wideband analog output is ideal for interfacing with aftermarket ECU's and data loggers. The narrowband output is ideal for stock narrowband oxygen sensor replacement where the simulated narrowband analog output is fed back into your ECU to make it operate as if the stock narrowband oxygen sensor is still installed while running the PLX wideband setup. All three outputs can be used simultaneously. Additional features include advanced soft start technology which prolongs the oxygen sensor's life and an aluminum enclosure for durability and reliability.