German phrase
Im Notfall rufen Sie ~ an.
Meaning
In case of emergency, call ___
When to use it
It directs an emergency call. It is a formal instruction often used in notices.
Example dialogue
Im Notfall rufen Sie bitte die Feuerwehr an.
In case of emergency, please call the fire department.
Ich rufe sofort die Feuerwehr an.
I will call the fire department right away.