If it did not, the program would alert him in a day or two.
No, they didn't want to alert him in any way.
But we have to be alerted in case they do.
That too must have alerted the man in the street as to what was up.
He tried to alert others in his household, but no one believed him.
The crashing of glass would alert everyone in the building, and the police might get involved.
"Doing so would alert the personnel in the primary security control center."
It was also used to alert the people in flood time.
Merchants can use them to alert others in their group or through the entire system.
The noise of the fight must have alerted the people in the control room.