AEM Digital Gauges feature 24 color-coded LED display lights that provide immediate reference to monitored engine function. Each gauge includes interchangeable black & white faceplates and black & silver bezels (excluding Wideband Air/Fuel Display Gauges) to customize the gauge's appearance. A 0-5V analog output is included for use with data loggers and virtually any engine management system. A three-digit digital readout is designed for quick reference and an auto-dimming / read out lighting feature is built-in. Gauges do not require a laptop for monitoring.