Summary of Attention Messages and Alarms
The Monitor 3 Air draws your attention to certain situa- tions and warns you of unsafe diving practices. Attention messages and alarms are always visual and acoustical while underwater; they are only optical at the surface except for the decompression alarm.
Attention Messages
Attention messages are given by symbols, letters, or flashing figures. In addition, two short beeps can be heard, in intervals of 4 seconds, in two different frequencies. Attention messages appear in the following situations:
Altitude dive
During a change to a higher altitude, the Monitor 3 Air displays an altitude sector icon and the corresponding adapta- tion time.
Section 2: Diving with the Monitor 3 Air
End of no-stop time
To avoid making a decompression dive, a "0" flashes during the last minute of 
Air Time Remaining is less than 3 minutes
To avoid a potential
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