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Active Buzzer
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A simple 5V active buzzer that generates a tone using its built-in oscillator. Just apply a DC voltage and it sounds — no additional signal generation or dri...
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A simple 5V active buzzer that generates a tone using its built-in oscillator. Just apply a DC voltage and it sounds — no additional signal generation or driver circuit required. Ideal for adding audible alerts, alarms, or feedback tones to Arduino and microcontroller projects.
Key Features
- Active Type – Built-in oscillator generates tone with DC voltage only
- 5V Operation – Connects directly to microcontroller I/O pins
- Compact Size – 12mm diameter × 9.5mm height
- Simple Wiring – Just power and ground, no signal generation needed
Specifications
- Type: Active (built-in oscillator)
- Operating Voltage: 5V DC
- Diameter: 12mm
- Height: 9.5mm
Tip: An active buzzer has a built-in oscillator and produces a fixed tone when powered. A passive buzzer requires an external signal (e.g. PWM) to generate sound, allowing you to control the frequency and play different tones.
Also Available
Ideal For
- Arduino and microcontroller alert systems
- Alarm and notification circuits
- Button press feedback
- Electronics learning projects
Package Contents
- 1× Active Buzzer (5V)
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
- PWM
- Pulse Width Modulation is a way for a digital pin to simulate variable output power by switching on and off very quickly. It matters for controlling things like LED brightness, motor speed, or servo-style signals from a microcontroller pin.
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