Alcatel-Lucent 1643 AMS User's Operation Manual page 37

Safety
Signal words
The signal words identify the hazard severity levels as follows:
Signal word
DANGER
WARNING
CAUTION
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365-312-807R7.2
Issue 4, May 2007
Meaning
Indicates an imminently hazardous situation (high risk) which, if
not avoided, will result in death or serious injury.
Indicates a potentially hazardous situation (medium risk) which,
if not avoided, could result in death or serious injury.
When used with the personal injury symbol:
Indicates a potentially hazardous situation (low risk) which, if
not avoided, may result in personal injury.
When used without the personal injury symbol:
Indicates a potentially hazardous situation (low risk) which, if
not avoided, may result in property damage, such as service
interruption or damage to equipment or other materials.
Alcatel-Lucent - Proprietary
See notice on first page
Structure of hazard statements
1-5