Product Overview
This module features a built-in active buzzer mounted on a compact PCB with a 2-pin header interface. It generates a continuous beep sound when power is applied, making it ideal for alerts, notifications, and simple audio feedback in electronic projects.
 
Unlike passive buzzers, this module does not require PWM or signal generation — just supply voltage and it works.
 
Key Features
Active Buzzer (Self-Oscillating)
Direct Power Operation (No Coding Required)
2-Pin Header Interface (2.54mm pitch)
Clear Polarity Marking (+ / -)
Compact & Breadboard Friendly
Loud and Stable Sound Output
 
Working Principle
Apply voltage across + and – pins
Internal oscillator generates tone automatically
Buzzer produces continuous sound
 
Use Cases
Alarm systems 
Doorbell projects 
IoT alert notifications
Timer / reminder circuits
Arduino / ESP / FPGA sound indication
Fault or warning indicator
 
Advantages
Plug-and-play simplicity
No coding required
Reliable alert output
 
Package Includes
1 × Active Buzzer Module (2-Pin)
1 x 2 Pin Header(unsoldered)
 
Notes:
Ensure correct polarity (+ / -)
Avoid over-voltage (>5V typical)
Sound is fixed frequency
 
Weight = 2 grams
Dimensions = 1.5 cm x 1.2 cm x 1.2 cm