Ultra Standard Series EGT gauges include a long lasting K type probe supporting the higher sustained temperature ranges of turbocharged vechiles. You'll benefit from standard features including: User adjustable temperature warning, easy to see warning lamp, separate peak session indicator, startup needle sequence similiar to STi models, shutdown sequence that shows session peak, ability to run additional external warning lamps, and a user initiated calibration option to ensure the accuracy of your readings, separate day/night backlighting contrast. Other avanced features include 50 seconds of record and playback ability. Useful if your doing autocross or other racing where you want to pay more attention to the road and then review your EGT response later. Audible alerts can be turned on/off, peak recall on demand are other useful features, and all controlled from a small wireless remote. No bulky control boxes to install and clutter your dash or console. Note, wireless remote sold seprately. Included at no charge with purchase of 3 or more gauges.