Bought this one year ago, and needed to change out the batteries.  Once done, could not get the code to work, so I called the 800 and the person seemed "Put out" that she had to help me.  Finally she said must be broken, you have to get a new one. I told her hard to believe that it was working fine until I had to replace the batteries.  She then just said is there anything further I can help you with.