蜂鸣器是一种一体化结构的电子讯响器，广泛应用于计算机、打印机、复印机、报警器、电子玩具、汽车电子设备、电话机、定时器等电子产品中作发声器件-Buzzer is an integrated structure of electronic messages percussion instrument, widely used in computers, printers, copiers, alarm, electronic toys, automobile electronic equipment, telephones, timers and other devices for electronic products for