61-223-0 Piezo Buzzer 4-8 VDC, Complete with internal driver. Current: 30mA Sound output: 85db @ 10cm Frequency: 2KHz
Piezo Buzzer vs Piezo Transducer
A Piezo Buzzer will output a continuous tone when the rated DC voltage is applied to its terminals. The Piezo Buzzer contains an internal oscillator to produce a typical 1-2 KHz tone. A Piezo Transducer is really a speaker that requires an audio oscillating tone be applied to its terminals to produce a sound. No sound will be produced when a DC voltage is applied.
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