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Suunto D5 has color-coded alarms, warnings and notifications. They are shown prominently on the display with an audible alarm (if tones are on). Alarms are always red. Warnings may be red or yellow. Notifications are always yellow.
Suunto D5 has vibration alarm. The vibration can be turned on or off for dive alarms, notifications and warnings.
Alarms are critical events that always require immediate action. When an alarm situation comes back to normal, the alarm will stop automatically.
|Ascent speed exceeds safe speed of 10 m (33 ft) per minute for five seconds or more.
|Decompression ceiling broken by more than 0.6 m (2 ft) on a decompression dive. Immediately descend back below ceiling depth and continue to ascend normally.
|Partial pressure of oxygen exceeds safe level (>1.6). Immediately ascend or change to a gas with lower oxygen percentage.
Warnings alert you to events that can impact your health and safety if you do not take action. Acknowledge the warning by pressing any button.
|Central Nervous System (CNS) Oxygen Toxicity level at 100% limit
|Recommended daily limit for Oxygen Tolerance Unit/Oxygen Toxicity Unit (OTU) reached
|Depth exceeds your depth alarm limit
|Dive time exceeds your dive time alarm limit
|Gas time is below your gas time alarm limit, or tank pressure is below 35 bar (~510 psi), in which case gas time is zero.
|Safety stop broken
|Ceiling of the voluntary safety stop broken by more than 0.6 m (2 ft)
Tank pressure is below your tank pressure alarm limit.
There is a built in 50-bar alarm that cannot be changed. In addition to it, there is a configurable tank pressure alarm you can set to any value and your dive computer also shows an alarm when that value and 50 bar (725 psi) pressure are reached. The tank pressure number is forced onto the display and turns yellow after the value you set and it turns red after 50 bar (725 psi).
Notifications indicate events that require preventive actions. Acknowledge the notification by pressing any button.
|Central Nervous System (CNS) Oxygen Toxicity level at 80% limit
|Approximately 80% of recommended daily limit for Oxygen Tolerance Unit/Oxygen Toxicity Unit (OTU) reached
|On multi-gas dive when ascending, it is safe to switch to next available gas for optimum decompression profile
|Approximately three hours of dive time left
|Approximately two hours of battery time left; re-charging required before next dive
|Tank POD low battery
|Tank POD battery life low; battery change required