Hi all, a bit of help please. A few years ago I purchased 5 1byone wireless doorbells 3 for ourselfs and 2 for a neighbour. I set them up all worked fine. But now they have all stopped working due to batteries. I have replaced all the Transmitter batteries and I have been trying to reset them all, I have cleared all the memories but I can only get one to work again, "more luck than judgment I think", I am now at my wits end. I have been trying for 2 days and they are just short of going to the tip. Any idea's PLEASE. Thank you.