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Piezo Buzzer (24 types) - Rated Voltage 6V, 9V and 12 V, 68dB..100dB

SMT Buzzer (23 types) - Rated Voltage 3V, 3,6V, 5V, 12V

Mechanical Buzzer (7 types) - Rated Voltage 9V and 12V

Piezo Transducer ( 23 types) - Rated Voltage 3V, 5V, 12V, 18V

Magnetic Buzzer (7 types) - Rated Voltage 3V, 5V, 12V

Receiver ( 17 types) - diameter 31~56mm

Magnetic Transducer (11 types) - Rated Voltage 1,5V, 3V, 5V, 12V

Sound Modules (70 types)   

SM SM-003                 SM SM-008                       SM SM-024                   SM SM-76

https://www.atd-shop.com/qx718/sireny-bzucaky-a-mikrofonni-komponenty