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Piezo buzzer-Self driver

Piezoelectric buzzer, also called piezo audio indicator, can make sound when connected to DC power. Compared with electromagnetic buzzer, have higher sound pressure, higher sensitivity, lower power consumption, generally in 20ma below, not more than 100ma, good reliability. Widely used in security, air conditioning, refrigerator, instrumentation, reversing radar, microwave oven , printer, copier, alarm, electronic toys, automotive electronics, green circuit board, telephones, timers, Audio equipment, cars, supermarket gating, and other electronic products.

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