Collision Sentry® helps reduce the probability of "blind corner" accidents by sending a warning well in advance of a pending collision. When the system detects motion on BOTH SIDES of the corner, creating conditions for an accident, it alerts approaching traffic. Integrated magnets on back allow for easy installation to a metallic corner or rack. Easy to install, self-powered, compact, highly visible and reliable. New 200 version redesigns the entire product, reducing the size, improving efficiency and ease of use.