本国际标准适用于带有整体外壳的声音信号装置，或根据IEC 60670，拟安装在外壳内或与外壳一起供应的用于家用和类似用途的声音信号装置，额定电压大于50 V a.c.或75 V d.c.但不超过250 V a.c.或250 V d.c.，额定功率输入不超过100 VA。 本标准适用于室内或室外使用的固定式、便携式和插入式设备。

This International Standard applies to sound signalling devices with integral enclosures or to sound signalling devices intended to be fitted into or supplied with enclosures according to IEC 60670 intended for household and similar purposes with rated voltages greater than 50 V a.c. or 75 V d.c. and not exceeding 250 V a.c. or 250 V d.c., and with rated power inputs not exceeding 100 VA. This standard applies to fixed, portable and plug-in devices for indoor or outdoor use.