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AEM's digital boost gauges include a 0-5v analog output for use with data loggers and virtually any engine management system, such as the Infinity ECU, Series 2 EMS or AQ-1 Data Logger, making it the perfect solution for users who need to monitor and data log boost at high RPM on tuned engines. Each gauge includes interchangeable silver and black bezels and black and white faceplates to personalize the look of your gauge. Features Easy-to-install Plug & Play harness and sensor included Reads -30 to 50 PSI 24 green LED display lights Auto-dimming gauge face and read out lighting Three digit readout in center Standard 52mm Gauge Housing 0-5V analog output Interchangeable black and silver bezels included Interchangeable black and white faceplates included AEM Digital Pressure Display Gauge (0-100 psi) 30-4401 Features: Includes easy-to-install harness and sensor Complete stand alone gauge requires no additional sensors or programs to operate Ideal for both fuel injected and carbureted motors LED displays provide precise reference to critical operating conditions and alert driver of potentially damaging operating conditions Includes 0-5V analog output for routing to engine management system or data logger Easy to read faceplates/displays are designed to complement existing AEM gauge styles Included bezels and face plates allow you to personalize the look of your gauge