Worrying about spikes in voltage level can now be a thing of the past with the Intellitronix super bright LED digital voltmeter co-pilot! It automatically detects and alerts you when your voltage level becomes either too high or too low, allowing you to worry less about constantly monitoring your gauges and focus more on doing what you love: driving! Made in the USA! Absolute brightest LEDS available in your choice of Blue, Red, Green, or White! Intellitronix is the leader in daylight and nighttime readable gauges and has been making digital gauges since 1981. No other gauge can compare in brightness!