Passive Buzzer Module

Product Description:

The passive buzzer has no built-in oscillator or power source, so it cannot beep with a DC signal directly. It must be driven by a 2K–5K square wave signal.

The sound frequency is controllable, allowing effects such as “Do-Re-Mi-Fa-So-La-Ti.”

In some special cases, it can share one control port with an LED.

The module uses an S8550 transistor driver

Operating voltage: 3.3V–5V

Fixed mounting screw holes for easy installation

PCB size: 32.2 mm × 13 mm

Interface Description:

3-wire interface

VCC → Connect to 3.3V–5V power supply

(Can connect directly to both 5V and 3.3V microcontrollers)

GND → Connect to GND

I/O → Connect to the microcontroller I/O pin