The Innovate Motorsports DB gauges are 52mm (2 1/16) air fuel gauges. Each gauge features a bright LED display (available in blue, green, or red). Each Gauge Kit includes the gauge, an LC-2 wideband controller, oxygen sensor, bung, serial cable, and the award-winning LogWorks engine-tuning software. For tuners seeking the most cost-effective way to start monitoring Air/Fuel Ratio, the DB series gauges offer an attractive option, while opening the world of true digital data acquisition and software engine analysis. For example, users can add multi-sensor interfaces, and log 5 critical parameters directly into any PC or laptop. Or they can get a PL-1 data logger for hundreds of hours of 32-channel data logging on an SD card. Best of all, the DB gauges include the powerful LogWorks software for synchronous high-speed logging of wideband data, other MTS sensors, and data from a growing list of piggyback fuel controllers and standalone or factory (OBD2) ECUs. This is the same software used by champion engine builders and racers.