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Active Buzzer

Shenghui Electronic is a leading manufacturer specializing in high-quality active piezo buzzer components, designed to deliver reliable and clear audio alerts for a wide range of applications. Our comprehensive product line includes versatile voltage options such as the 3V, 6V, and 12V loud piezo buzzer, all featuring built-in drive circuits for simplified integration and operation.


For space-constrained applications, we provide a selection of mini piezo buzzer models that combine a small footprint with efficient performance. For applications requiring maximum audibility, our high-output loud piezo buzzer units deliver sound pressure levels (SPL) up to 110dB, ensuring effective notifications in noisy environments.


From compact Φ14mm models to larger Φ42mm designs, our active piezo buzzer series offers a range of frequencies (2.7KHz to 4KHz) and output levels (80dB to 110dB) to match your specific requirements. Each active piezo buzzer is manufactured to high reliability standards, providing consistent performance and long service life. We support full customization (OEM/ODM) for your mini piezo buzzer or loud piezo buzzer projects, including adjustments to voltage, frequency, sound pressure, dimensions, and connectors. Contact us for datasheets, samples, and expert support for your next mini piezo buzzer application.


12V Active Piezo Buzzer
12V Active Piezo Buzzer
Φ14.0x7.5H 12VDC 4KHz 85dB
Φ23.0x9.5H 12VDC 82dB Active Piezo Buzzer
Φ23.0x9.5H 12VDC 82dB Active Piezo Buzzer
Φ23.0x9.5H 12VDC 82dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ23.0x9.8H 12VDC 3.5KHz 80dB
12VDC 3.5KHz 80dB Active Piezo Buzzer with Diameter 23MM
12VDC 3.5KHz 80dB Active Piezo Buzzer with Diameter 23MM
Φ23.0x9.8H 12VDC 3.5KHz 80dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ24.0×12.5H 88dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ24.0x16.0H 12VDC 4KHz 90dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ26.0x22.0H 12VDC 2.7KHz 90dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ26.0x22.0H 12VDC 2.7KHz 90dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ30.0x20.0H 6VDC 3KHz 95dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ30.0x25.0H 12VDC 3.5KHz 95dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ32.0x14.0H 12VDC 4KHz 90dB
Active Piezo Buzzer
Active Piezo Buzzer
Φ42.0x16.0H 12VDC 2.8KHz 110dB
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FAQs about

Finding a high quality, loud active buzzer

To find a high-quality, loud active buzzer, consider key specifications: sound pressure level (SPL, measured in dB at 10cm), operating voltage (e.g., 3V, 5V, 12V), frequency (typically 2-5 kHz), and durability. Look for buzzers with a high dB rating (e.g.

How to tell if a piezo buzzer is active or passive?

To determine if a piezo buzzer is active or passive, you can perform a simple DC voltage test: apply the rated DC voltage (e.g., 5V) directly across its terminals. If it produces a continuous tone, it is active. If it remains silent or only produces a cli

Active Buzzers vs Passive Buzzers

Active buzzers have a built-in oscillator and produce sound with a simple DC voltage, making them easy to use but limited to a fixed tone. Passive buzzers lack an internal oscillator and require an external oscillating signal (e.g., a square wave) to driv

How to connect an active buzzer?

To connect an active buzzer, first identify the positive (+) and negative (-) terminals. Connect the positive pin to a DC power source (e.g., 3V, 5V, or 12V, as per the buzzer’s rating) and the negative pin to ground. Since the buzzer contains an internal

What is an active buzzer?

An active buzzer is a complete, self-contained sound-generating device that produces a continuous, fixed-frequency tone when a DC voltage is applied. It integrates the oscillator circuit internally, requiring no external driving signal. It is commonly use