Apologies in advance for my imperfect English, but I'm using Google Translate.
I have a 3S Plus Universal and I have proposed many times to Sena, without any success, to add the automatic switch-off function of the intercom when it has been disconnected from all the peripherals for at least 30 minutes.
I made this request because it often happens that I forget the intercom on after putting down my helmet, causing the battery to run down completely. In this way you would avoid finding the intercom completely dead when you go out on the bike the next time.
I hope you share my need and that Sena will take it into consideration.
Thanks all in advance