Maxsa 37340 Park Perfect Light Up LED Parking Ball

UPDATE: In real life, now that I've hung it up, it rarely flashes because I run into it so gently. Also, I back into my garage and the light is not all that noticeable, to my surprise. I have an SUV and didn't foresee that a ball hanging down gets in the way when I need to open the tailgate (because I've backed in). I rigged up a hook on my garage's side wall to secure it out of the way when I need to get into the hatch. That is no fault of this product, just a FYI. All in all, not a bad purchase. Everything's all set, just hang it up with the very long string. I made a knotted loop in my string to secure the excess, so I could adjust the ball's height without climbing up a ladder each time. It did take a little experimenting to hang it just right. Because car windows are sloped, adjusting the height adjusts where and when the ball makes contact, for fine tuning. ORIGINAL REVIEW: I was concerned about the reviews that say you have to be traveling with some speed to set this thing off, but I tried mine by very very gently tapping it against a surface and it went off every time. I haven't hung it yet because my garage isn't ready for prime time, but I am satisfied that this will blink when I gently back into it. I was going to go the tennis ball route but with advancing age :( I thought the light would be helpful. Also I remember it was difficult attaching a string to a tennis ball. I just moved and was going to have to buy a tennis ball, so for just a few dollars more I got everything I need plus it lights up

It had already been used (plaster in the thread of screw) and it had about 1m of string not the 2.4m (8ft) that it advertised. Seems to work alright though.

The idea the ball will light up when touched (in my case set for my windscreen) is good, but this feature does not work as the ball isn't as sensitive as it should be. The ball never lights up after touching the windscreen unless you hit (touch) with some force which in my case means I would ended hitting the rear wall of my garage. The only advantage it is has over my old soft padded ball is the plastic which you can hear when it touches the windscreen. This is going back for a refund.

Easily installed on garage ceiling and works very well. We can accurately park the Jeep just the right distance into the garage and it is great fun ( honestly! ) getting the green ball to turn red as it taps the windscreen! Very useful and simple to use.

I back into my garage so knowing when to stop is a great thing for me. I had a tennis ball up (which was hard to see at certain times of the day because of my darkened.windows) that I would hear as I bumped into it however when I was tired after a long days work I found that many a time I was backing in way further than what I thought. Now I can clearly see the ball and with just the slightest bump I can see it is time to stop. Works great for me. I also installed one in a customers rental property for one of the tenants. She however moved into her garage extremely slow because I had warned her about exerting so much force on the wall stud due to misjudging when to stop (she is in her 70's). When we where adjusting the ball it only went off once due to this however the bright color was something she could see so she was fine with it only working when she bumped it harder than what she wanted to. All in all, for the price, I am very happy