No idea about that one John?
I still have the instructions for mine but never read any further than programming the sounder. They worked after that, so why read on LOL? I will have a look and see if they tell us what the different warning bleeps indicate.
Mine occasionally give out the odd warning tone but it’s infrequent enough for it to be more puzzling than annoying. Certainly not even close to being an issue where I would consider changing alarms.
Got a mate who uses the ATTX V2 with Delks and he is quite happy. That said the only two people I know who bought the alarms had serious range issues. I am talking vary limited range with no warning that the connection had been broken. I would rather have alarms that give out the occasional inexplicable bleep but continue to work 100% rather than alarms that have the potential to stay silent when they should be screaming, just because you have walked a few yards up the bank talking to your mate in the next peg.
Edited just to say: Just remembered the tone you mean John. Yep mine occasionally do that one as well, no idea why or what it indicates and like I said it's infrequent enough for it to be more puzzling than annoying, so I just swith my reciever off and on again and just ignore it.