He couldn't even press one of the buttons on the buzzer system for help.

Academic team is a contest where students answer questions with a buzzer system.

When the buzzer system was working and had been completely checked, they decided on signals.

First I was angry that buzzer systems were put on the doors, then that people kept breaking them.

Additionally, the person who managed the buzzer system was changed.

After the murder, the residents of the building, concerned with security, stopped using the buzzer system and would go downstairs individually to open the door.

Using a buzzer system, the judges then determine the order of answering.

Warned by their buzzer warning system that someone was approaching, they ran.

A few weeks ago, the buzzer system in the building went awry and was buzzing constantly.

A buzzer system is used to identify the player who buzzes in first.