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10pcs 5x7cm FR-4 2.54mm Single Side Prototype PCB Printed Circuit Board

10pcs 9x15cm FR-4 2.54mm Single Side Prototype PCB Printed Circuit Board

10pcs 3V Active Buzzer Electromagnetic SOT Plastic-sealed Tube Long Sound 12mmx9.5mm

10pcs 3V-12V Buzzer 16R Resistance AC Passive Buzzer 12085

10pcs 12V Active Buzzer Electromagnetic SOT Plastic Sealed Tube Long Sound 12mmx9.5mm