TabTime Medelert: My TabTime Medelert's alarm is not ringing
This normally happens because the TabTime Medelert has accidentally been placed in silent mode. To check this, look at the LCD display. If there isn't a letter a, b or c to the left of the time, the unit is in silent mode.
To turn the audio alarm back on, press button 1 and 3 and at the same time until you see the letter "a" appear. If you don’t, repeat again until the letter "a" appears. Once you can see the letter "a" you’ll start hearing the tone the next time an alarm sounds.