Review on 🚗 Retractable Ball Parking Aid - Genie Yellow Perfect Stop Compatible with All Garage Door Openers-GPS-R, one Size by Kyle Rock

Although "if all else fails read the instructions" if you read the instructions (I included them because the seller didn't), explain clear how to install the ball for automatic retraction when the garage door is closed. Again, it automatically withdraws regardless of any feedback. In my case, I leave my car outside in the summer (to have more space in the garage) so I didn't want the ball to hang down when I'm working with the door closed. There's nothing special about the ball except maybe three eye hooks and maybe a longer cord. Essentially, you attach the end of a string to your garage door so the ball rises when the door closes. Another eye hook allows you to work with different ceiling heights by calculating placement either with simple geometry or using the table provided. For this product, the brand name is actually much cheaper than the generic! I found the ball spins a bit after the door opens (and comes down), but you can still easily see where to stop. It's possible that rubbing the line on the eye hooks after a lot of use can cause it to snap.