商品櫥窗＞蜂鳴器＞External Drive Piezo Buzzer(Pin Type)● 型號：PIEZO BUZZER蜂鳴器● 規格：OD14.0*4.0mm,3Vp–p,Freq.:4KHz● 描述：PIEZO BUZZER,External Drive Piezo Buzzer