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// Where this part goes

Used in these kits and projects

All projects →

Kit Arduino UNO Sensor & Output Starter Kit - LEDs, Buzzer, Servo, Ultrasonic & LCD 10 parts · 7 projects → Kit Arduino Ultrasonic Distance & Parking Learning Kit 9 parts · 9 projects → Kit ESP32 Fall-Detection Learning Prototype 7 parts · 5 projects → Kit ESP32 Plant Monitoring Learning Kit 7 parts · 7 projects →

Lesson 3: Buzzer Patterns Beginner
Lesson 7: Parking Assistant & Sensor Dashboard Beginner
Lesson 4: Buzzer Alert Beginner
Lesson 5: Fall-Detection Learning Prototype Intermediate
Optional audible-alert investigation

// 01

Description

The Active Buzzer Module (5V DC) is a simple, reliable sound component for Arduino and DIY electronics projects. Because it’s an active buzzer, it contains an internal oscillator, so it will produce a steady beep sound as soon as you apply a HIGH signal (or power, depending on module pinout). This makes it much easier than a passive buzzer, which requires a PWM/tone signal to generate sound.

Use this module for alarm systems, warning indicators, timers, door alerts, sensor triggers, robotics status beeps, and educational projects. It’s perfect for beginners because it needs only basic ON/OFF control and works well with common microcontrollers.

Active vs Passive (Quick Difference)

Active buzzer: Beeps with simple ON/OFF (digital HIGH/LOW)
Passive buzzer: Needs a tone/PWM frequency signal to make sound

If you want the easiest buzzer for alarms and alerts, active is the right choice.

Key Features & Benefits

Plug-and-Play Sound Output: Simple digital control for instant beep
5V Compatible: Great match for Arduino UNO/Nano and 5V systems
Loud and Clear Alarm: Good for notifications, warnings, and status signals
Module Format: Easy wiring with breadboard-friendly pins
2-Pack Included: Ideal for multiple builds, replacements, or classroom use

Typical Pinout (Common 3-Pin Modules)

Pin	Function
VCC	5V power
GND	Ground
SIG / IN	Digital control input (HIGH = ON)

Note: Some boards label pins as S, +, -. Always match VCC and GND correctly.

Typical Specifications

Item	Details
Type	Active buzzer module (internal oscillator)
Operating Voltage	5V DC
Control	Digital ON/OFF (HIGH/LOW)
Use	Alarm, buzzer alert, beeper indicator
Quantity	2-Pack

Common Applications

Motion sensor alarms and door alerts
Arduino timers and countdown beeps
Robotics status indication (start/stop/error)
Water level / gas / flame sensor alerts
School projects and STEM learning kits

// 02

Specifications

Type Active buzzer (fixed tone)

Supply Voltage 5 V

Pins VCC / GND / IO

Sound Level ~85dB

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// From Sensors