Banks iDash is the smallest, most powerful plug - n - play OBD - II monitor and control interface on the market. With its easy to read 2 - to 8 - gauge user - selectable LCD display, the iDash reads a multitude of engine parameters and internal data directly from the vehicles ECM via OBD - II. It also opens a whole new world of Banks exclusive calculated parameters not available on any other device. Set custom low and high alerts for any engine parameter. Monitor max and min values for a user - selectable list of parameters. Read and clear trouble codes on - the - fly. Customize the navigation button and LCD display colors, brightness, and even the rate at which they dim at night. Daisy chain 4 iDash gauges and view up to 32 parameters simultaneously. Add Banks sensor modules such as the 4 - channel analog module, 4 - channel thermocouple module, and AirMouse Ambient Air Density Module for nearly infinite vehicle and weather analysis. Expand functionality with Banks Modules (PressureTemp Sensors, and more).