Cavity speaker switch panel tablet smart device instrument small electrical appliances voice announcement toy speaker sound


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Diameter 12/15/18/20/27/35/50MM Piezoelectric ceramic chip buzzer chip welding wire copper sheet
6022/4015/4522/4013 Electronic microphone with needle and wire
Passive Chip Buzzer MLT-1230 9018 Low Power Piezo 12*12*3/9*9*1.8mm high
Square shell alarm 47*39*23MM piezoelectric active buzzer 12V 24V high decibel horn alarm