Tired of playing bumper cars with your garage? Park perfect every time with this flashing signal system. It automatically tells you the exact spot to stop to avoid running into walls, appliances, bikes, cabinets and tools. As soon as the front edge of your vehicle touches the 50-1/2 inch tall post, the reflective sign pulsates with two bright LED's. Works with cars, SUV's and vans. Stands at eye level of clear visibility. Complete with sturdy swing-open base. Minimal assembly required - no tools necessary. Uses 2 AG13 batteries, included.