I use the Edge 840 to stay within a certain power or HR range. This works fine, the device displays a message when I am out of range, and beeps.
Unfortunately, the beep for going out of range is the exact same as the one when I get back into range. This means that when this happens more frequently (for example on a rough trail with my gravel bike, where power might fluctuate wildly) I sometimes lose track of whether I'm in range or not.
I then have to look at the device to see what state it's in. This can be dangerous or at least annoying.
Is there any solution? Can I customise the beeps? I can't imagine that I'm the only one with this issue, and it is frankly surprising that such a basic thing happens on a near-top-of-the-line device...