Very clear signal.

Followed all instructions an reinstalled at lower height,as I originally it was not reflecting its signal off of windshield, but failed to work when I relocated its sensor to bounce off bumper of truck.

Only caution is that when you pull in the garage you need to go slowly or you will miss the green signal and quickly see the yellow slow down

As some of the other reviews have said the signal to tell you when to stop can be ambiguous at times.

But with the Park-Zone device, when parked, the minimum distance between the car and the sensor has to be 1'4" (16 inches) or it will give you a false signal every time

The rest of the time is giving wrong signal

Overall it's definitely worth it, I just wish that it worked as it should, more accurately with faster vehicle recognition.

This products works as it is advertised, but really does not do the job of parking a car precisely in a garage because it is not precise enough to solve the problem.

Have been using this for several months, works as it should.

Hopefully the replacement will work as it is supposed to.