I ordered the two sets of wireless doorbell. One works, with a few adjustment done by husband. He has to put some glue on the receiver. The other one does not work at all; this is the reason why I called. Curtis (I think this was the service rep's name) was excellent. He promised me that he will be emailing me a prepaid return label for an exchange. I will be waiting for such. Hopefully, the product that I will be getting in return will work. You should tell the manufacturer that their product is poorly done!