The AEM Digital Oil/Trans/Water Temperature Gauge combines unsurpassed accuracy, speed and control with an easy-to-read digital LED interface that displays temperature in 1 degree increments, and a sweeping LED "needle" that lines the edge and moves as temperatures change from 0 to 100. The aftermarket digital temperature gauge's readout will automatically increase and decrease in intensity due to the built in ambient light sensing photocell.AEM's digital temperature gauge includes 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 temperatures at high RPM on tuned engines. Each AEM temperature gauge includes interchangeable silver and black bezels and black and white faceplates to personalize the look of your gauge.