Chime alert, bright, percussion, hit
Defibrillator alert beeps. Medical.
Sound design alert: pure, high-pitched, reverberating chord.
Sound design alert: four high pitched beeps in succession
Sound design alert: high pitched delayed melodic tone
Ding from a microwave oven
Smoke alarm starting to beep and then stopping
Burglar alarm whooping and rising quickly
Various course tone modulating in pitch and speed - with variations