DIFI Advance CR 2.5inch Auto Gauge Meter Turbo BOOST/Water temp/Oil Temp/Oil Press/RPM/Volt/Vacuum/EXT TEMP/AFR/Fuel Press Gauge 1, This gauge work with Stepper motor and electronic sensor. 2, Stepper Motor is more fast more accurate. 3, Turbo Gauge, Vacuum Gauge, EXT Temp Gauge, Oil Press Gauge, Volt Gauge, Oil Temp Gauge, Water Temp Gauge, Tachometer & Vacuum Gauge are available. 4, Gauge dials are invisible while the ignition switch is off. Once the ignition switch is turned on, a clear display appears with white LED illumination. A red emitting needle pointer increases visibility. 5, The illumination color can be adjustable from white and amber red 6, Double Warning function by a meter"'"s LED lamp and a beep 7, only for 12V vehicles 8, work without the control unit 9, This is universal meter gauges that can fit any car 10, Gorgeous Opening mode and Ending model. Functions on the gauge: 1.Peak Setting 2.Color Choose 3.Bright Level 4.Buzzer Type 5.Buzzer Level 6.Open Ceremonies 7.Warning Setting 8.Zero position adjustment Package including: 1 * Gauge 1 * Hat and Holder 1 * Sensor (Water temp, oil temp, oil press, vacuum,turbo,ext temp. fuel press) 1 * Bolts Pack 1 * English instruction