FIRE PROTECTION EQUIPMENT-NAMELY, FIRE SENSING AND DETECTING DEVICES RESPONSIVE TO PRODUCTS OF COMBUSTION; FIRE CONTROL SYSTEMS COMPRISING ANNUNCIATOR PANELS, DETECTOR SWITCHES AND RELAYS FOR ACTUATING AN ALARM; ELECTROMECHANICAL DOOR HOLDER RELEASES AND/OR DOOR CLOSERS AND LATCHES; AND AUDIBLE AND SILENT ALARMS AND INDICATORS INCLUDING BELLS, BUZZERS, HORNS, LIGHTS AND SIRENS

FIRE CONTROL SYSTEMS COMPRISING ANNUNCIATOR PANELS, DETECTOR SWITCHES AND RELAYS FOR ACTUATING MECHANICAL, ELECTRICAL OR PNEUMATIC FIRE PROTECTION EQUIPMENT OR SPRINKLER SYSTEMS