Anyone had the Dex tell them that the battery was low on their transmitter and had it be a false alarm? My mom just called me and said that she got the "Low Battery Order New Transmitter" alarm. She is sure that is what it said - she wrote it down. But when I had her check the battery status screen, it shows as okay. This freaking transmitter is less than a month old. It is the replacement for a transmitter that died at 4 months. With that battery, the battery status screen did show as "low" once I got the warning. WTF is going on here? Anyone have this happen before?