French phrase
Prévenez-moi à ~.
Meaning
Please contact me at ___.
When to use it
A polite request for contact at a specified time. The wording works in both everyday and professional settings.
Example dialogue
Prévenez-moi à 18 h.
Please contact me at 6 p.m.
Entendu, je vous appellerai à cette heure.
Understood, I'll call you at that time.