I think we’re stuck with the Temp Basal beep but it is a normal PDM function. It’s to make sure that you know you’re doing something different so if you’ve set it and your plans change again you have a reminder to fix your basal again. It’s a bit annoying but I know I’ve suspended my basal (for downloads or basal program changes) and forgotten to resume it and been glad that my PDM beeped at me so I try not to complain when it’s beeping and I don’t particularly need it to!