MULTICOMP
压电元件, 25000pF, 4KHZ
磁性蜂鸣器, 4KHZ, 80DB, 整卷
压电蜂鸣器, 3mA, 4KHZ, 80DB, 16.5MM
压电蜂鸣器, 5mA, 4KHZ, 80DB, 23MM
压电蜂鸣器, 4mA, 4KHZ, 85DB, 24MM