Sentry speed monitoring radar always slows down daydreaming drivers in the most citizen-friendly way. Powered by digital signal processing technology, this super-bright LED sign guards neighborhoods, school zones, and construction sites. It flashes on speeders to give extra warnings. Additional options include the paint color, a three-digit display and/or with other display colors, prompt panel size, color and text, speed in MPH or KM/H, speeding threshold and alarms, and trailer/carrier mounting.