ITEM NAME:1pcs small 3.3V-5V Active Buzzer Alarm Module Z a.imagelink a:hover.imagelink {color:#db3606;.Vcc 3.3~5V. I/O I/O interface of SCM. Audion 9012 drive. Pin definition. Bring oscillation source. Pin Definition It creates different sound based on the different frequency of I/O toggling.
