For example, 1 x 5 mins 1 x 3 mins, then repeat, or just bleep every 5 mins.
audible bleep for heart rate training zone alarm.
bleep the on-call pharmacist.
The recipient will then hear a bleep, then receive your message on screen, with a short header attached.
I continued my search with it set on zero, knowing the Iron would give a double bleep.