DESC: Radar / Laser Detector by EARLY WARNING #: EW-4100 Early Warning Radar produces more than half of the world's radar detectors for the biggest names in the industry. Having been in business for more than 20 years, the company is dedicated to providing radar detectors that help drivers stay informed about their surroundings and help them be better drivers by providing alerts as to the existence of speed detection devices, safety messages and road conditions.