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10PCS 12085 Passive Buzzer 12MM*8.5MM 42R Resistance 3V 5V 9V 12V in Common Use Mini Piezo Buzzers Kit, for Arduino

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10/20PCS Piezoelectric Ceramic Wafer Plates Piezo Diameter 12MM 15MM 18MM 20MM 27MM 35MM 50MM with Wire for Buzzer Loudspeaker

5PCS Mini Plug Speaker Computer Motherboard Onboard Case Buzzer BIOS Beep Speaker 4 Pins PC Case Buzzer for PC Interanal

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15 Pcs DC 3-24V 95 dB Electronic Buzzer Active Piezo Buzzer Alarm Sounder Continuous Sound Beep, Black