I was using trying to get their support on the phone but you cannot call them. You either email them or use the chat feature. I tried their chat and was waiting for 20 minutes and nobody responded even though it said I was # 1 in their queue. So I exited and tried again and am still waiting. I have bought 3 of their indoor/outdoor temperature sensors and every one of them went bad with the lcd segments missing. I am really angry because they don't respond to you and you can't even complain to them. They really suck!