A step set to trigger an alarm when weight fell upon it.

Thus I could have opened the door without triggering an alarm.

If he made a mistake, it would almost certainly trigger an alarm.

He triggers an alarm in the process and is forced to fight his way out of the building.

Keeping an elevator stopped for too long may trigger an alarm.

So, the two can be separated without triggering an alarm.

Performance thresholds can be set in order to trigger an alarm.

Anyone trying to force their way through would automatically trigger alarms throughout the massive building.

This triggered a great alarm and calls for its own tests were made by country's influential political science circles.

The scanners saw he was not authorized to go by, and might trigger an alarm.