Passive Buzzer Module 5V Buzzer Arduino AVR pasif buzer pasiv buzer

The characteristics of the passive buzzer are:
1, there is no shock source inside the passive, so if it can’t be tween by DC signal. A square wave of 2K~5K must be used to darive it
2, in some special cases, a control port can be multiplexed with LED.
3, voice frequency controllable, can make “to send Tracy cable” effect.
The characteristics of the active buzzer are:
1, the active buzzer has a shock source inside, so it will be called as long as it is electrified.
2, program control is convenient. A high and low level of MCU can make it sound, but passive buzzer can not do it.
A module description
The 1 module is driven by the 9012 triode
6 with fixed bolt holes for easy installation
7 small size: 3.3cm * 1.3cm PCB
Two module interface description (3 wire system)
2 working voltage 3.3V-5V
1 VCC external 3.3V-5V voltage (directly connected to 5V microcontroller and 3.3V microcontroller).
2 GND outside GND
3 I/O external chip IO port