If you have trouble judging where to stop in your garage to allow clearance for the door, the ideal stop parking system GPS-R is the solution to your worries. No more getting in and out of your car to see how much more space you have. With the easy-to-install system, just drive forward in your garage until the yellow ball touches the windshield and you'll know you're parked at the same distance every time you enter your garage. The foam parking ball is mounted to the ceiling and lowers into place when the garage door is opened. It retracts when the door is closed, so it isn't in your way. Compatible with all garage door openers and safe for your vehicle, the universal ideal stop system is simple but extremely effective.