1. 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. 2. The illumination color can be adjustable from white and amber red. 3. Double warning function by a meter's LED lamp and a beep. 4. Only for 12V vehicles. 5. Work without the control unit. 6. This is universal meter gauges that can fit any car.
