This Malaysian Standard specifies the requirements, test methods and performance criteria for fire alarm sounders in a fixed installation intended to signal an audible warning of fire between a fire detection and fire alarm system and the occupants of a building. It is intended to cover only those devices which derive their operating power by means of a physical electrical connection to an external source such as a fire alarm system.
This standard specifies fire alarm sounders for two types of application environment, i.e. Type A for indoor use and Type B for outdoor use.
This standard is not intended to cover:
a)loudspeaker type devices primarily intended for emitting emergency voice messages; and
b)supervisory sounders, for example, within the control and indicating equipment.