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12v Piezo Buzzer

Model	1475B-TO-12-4.0-7.6-R
Rated Voltage	12 VDC
Operating Voltage	3-16 VDC
Current Consumption	=12 mA
Test Distance	10 cm
SPL	=90 dB @10cm
Resonant Frequency	4000±500 Hz
Operating Temperature	-40 ~ +85 ?
Storage Temperature	-40 ~ +90 ?
Weight	0.96g
Carton Size	51.5*42*26cm
Quantity	5000 pcs
Gross Weight	6.58Kg
Tone	Continuous Sound

12v Piezo buzzer is an electro-acoustic conversion device. Paste the piezoelectric material on the metal sheet, when the piezoelectric material and the metal sheet applied to a voltage across the piezoelectric effect, the buzzer will produce mechanical deformation and make a sound. 

Piezoelectric materials are available in a variety of piezoelectric materials used in buzz films are usually high-voltage polarized piezoelectric ceramics.