I owned another type that indicates the same method and it quit functioning during cold weather.

The PZ-8900 did not work very well in colder weather (near freezing) and in very cold weather (below 20 degrees F) it didn't work at all

One review mentioned it not working in cold weather, and I did not experience that at all.

Cold weather make the batteries drain faster.

Cold weather make the batteries drain faster.

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.