Works ... unlike many other good markets

After looking at the various reviews on amazon for reliability, for leaks, and the scope of bells Grothe, I chose this product.

Apart from sealing that I could not really test, given the time most of the sunny weather, the bell through a pounded masonry, metal gate, two trees, and a window to increase from 35m. You just leave before the window because a thick wall in addition prevents it from working. It says 250m but they specify well without obstacles.

Here it works very well, you can even make silent night. This bell is the same as the range just above the same brand but did not include some options like the ability to relay or food sector.

No need to leave open the portal and / or wait on the street, if waiting for someone.