I have looked extensively alternative Intercoms in all possible online shops and remained in the end the investment of Elro. The price-performance ratio has convinced me. So far I had 3 different radio gongs in use. The constant changing batteries so went on my nerves that I looked around for a cable solution. The installation is also for lay people (as I am), very easy. It's almost impossible, "stuck" the device wrong. The only thing that would possibly complain about, is the relatively short cable supplied (but you knew that in advance). But the cable to extend also not a problem (there are at any hardware store). The voice quality is convincing and the doorbell is not annoying. The housing for outdoor use makes a very solid and stable (hopefully waterproof) impression. I have for almost 4 weeks in use and can recommend the system now only continue.
