We received a skybell as a gift. It stopped working after 3 months. We contacted tech support twice and we were instructed to change the transformer, which we did. We were, also, in email contact with Skybell's technical support agent, in which they said, there was nothing wrong with their product. Our signal is strong and, well, basically, they just washed their hands with our complaint and ended contact with us. In our opinion, the Skybell and their tech support are not worth ones time. We are very disappointed, especially, with Skybell's backing of their products. This product doesn't even deserve one star.