A wideband UEGO sensor controller accurately monitors Air/Fuel ratios (AFR) during the tuning process to prevent a lean fuel mixture, which could lead to engine damage. AEM's Wideband UEGO Controller is available in single- and dual-channel models for everything from four-cylinders to V10s, and is the most affordable UEGO sensor controller available. This unit has a very low current draw, and features both 0-5v calibrated output and 0-1v calibrated output. This unit works with virtually any stand-alone engine management system. For those who do not want to carry a bulky laptop to monitor their A/F ratio, AEM has combined its single-channel wideband UEGO controller and gauge display into one unit, uniting unsurpassed AFR accuracy and control with an easy-to-read interface. AEMís Gauge-Type Wideband UEGO Controller is available in either an analog or digital display. The digital unit features a digital LED display and sweeping LED ďneedleĒ that changes colors as AFR changes from rich to lean. The analog unit unites unsurpassed accuracy, speed and control with an easy to read, analog interface. Each unitís 52mm (2-1/16Ē) gauge housing fits in most gauge pods and can be remotely mounted virtually anywhere. Now you no longer need a laptop to monitor your Air/Fuel ratio. AEM has a solution for you, laptop or not!