Have long wavered back and forth, but then decided to Elro, the company has never disappointed me. Utopian range of other manufacturers were me suspect - the Elro bridged by a massive residential building and 15 mtr. Front yard loose 25 mtr. performed flawlessly. For testing purposes, I am using the receiver behind another garden building (also solid) gone - still rang, they were then again 20 mtr. incl. 4 mtr. Building. 45 mtr. by 2 buildings - no more brauchts! Buy recommendation!