The Mini Active Buzzer 5V-12V is a small active buzzer that delivers clear audio alerts with little effort. This compact component generates a steady tone when powered, making it ideal for projects requiring audible signals. It’s built-in oscillator simplifies circuit design, requiring only a DC voltage to operate. From timers to sensors, this buzzer ensures reliable feedback sound output. Its small size and low power draw make it a practical choice for various electronic applications, to provide effective audio feedback.

Key Features

• A built-in oscillator creates an instant tone, reducing circuit complexity.
• The 12mm diameter fits into tight spaces for versatile integration.
• Low current draw (≤30mA at 5V) supports energy-efficient designs.
• A ≥85dB sound output ensures audible alerts in diverse settings.

Technical Specifications

• Operating Voltage: 5V–12V DC (5V optimal for efficiency).
• Rated Current: ≤30mA at 5V, minimising power use.
• Sound Output: ≥85dB at 10cm, effective for notifications.
• Resonant Frequency: 2048–2300Hz, providing a consistent tone.
• Dimensions: 12mm diameter, 9.5mm height, suited for compact projects.
• Operating Temperature: -20°C to +65°C, reliable for indoor use.

Applications

• Triggers alerts in environmental monitoring, like a sensor beeping for high humidity.
• Signals status in access systems, such as a lock confirming activation.
• Notifies users in timing circuits, like a timer sounding at cycle completion.
• Enables feedback in educational circuits, supporting sound-based experiments.

Usage Guide

• How to Connect It: Connect the positive pin (marked “+”) to a 5V–12V DC source and the negative pin to ground. Secure with a breadboard or soldering.
• Programming/Control Basics: Apply a 5V DC signal (e.g., from a microcontroller pin set to HIGH) to activate. Toggle the signal to control on/off states.
• Tips for Testing It Properly: Use a stable 5V source and confirm a clear tone at 10cm. For 12V, verify power supply stability.
• Common Issues & Solutions: No sound? Verify polarity and voltage (5V–12V). Weak tone? Ensure a stable power source.

Resources

• Arduino Tone Tutorial – Microcontroller integration guide.