burglar alarm

By law, every fire escape was rigged with a fire alarm, in addition to the regular burglar alarm.

This is the bell that belonged to the "burglar-alarm," lately connected with the show-case, &c.

This is the wire that rang the bell, that belonged to the "burglar-alarm," lately connected with the show-case, &c.

An electric fire detector in the cellar acts much like a burglar alarm.

Here it ran for several weeks as a telephone system by day and a burglar-alarm by night.