The buzzers or buzzers serve as audible indicators in many systems, they can serve for a user to notice that they have pressed a button, even as an alarm signal.
Its consumption is very low so it could be connected directly to the pin of almost any microcontroller.
Buzzer (piezoelectric buzzer) 12x 9.5mm
SKU: IM-AUD-002
$10.00Price
Operating voltage: 3.5 - 5.5V
Current: ~ 25mA
Frequency: ~ 4kHz
Sound pressure level: ~ 72dB
Tone: constant