The module is usually used to make sounds via setting under some specific circumstance.
– 1 x Passive buzzer Module
– 1 x 3-Pin anti-reverse cable
A passive buzzer that needs square signals of 2k-5k to drive, for it has no built-in oscillating source, and then makes sounds when energized
Use an S8550 PNP transistor for drive
Controllable sound frequency – it can make the buzzer beep like Do, Re, Mi, Fa, Sol, La, Ti
Working voltage: 3 – 5V; PCB size: 2.0 x 2.0 cm
With power light and indicator of digital signal output