2-Pack Active Piezoelectric Alarm Buzzer DC 3-24V | 90dB
2-Pack Active Piezoelectric Alarm Buzzer DC 3-24V | 90dB
2-Pack High Decibel Active Piezoelectric Alarm Buzzer – DC 3-24V
Keep your home, office, or project secure with this powerful active piezoelectric alarm buzzer. Delivering a loud 90dB continuous warning tone, this compact electronic buzzer is built for a wide variety of safety and alert applications. The broad DC 3–24V operating range makes it compatible with virtually any electronic system — from DIY projects to commercial security installations. You get two buzzers in every pack for maximum versatility and value.
Key Features
- High 90dB Output: Produces a loud, attention-grabbing continuous sound to effectively signal alerts in any environment.
- Wide Voltage Compatibility: Operates on DC 3–24V, making it suitable for a broad range of devices, control boards, and security systems.
- Active Piezoelectric Design: Built-in oscillator means no external signal generator is needed — simply apply power and the buzzer sounds immediately.
- Durable Build: Black plastic housing rated for operating temperatures from -20°C to +80°C, ensuring reliable performance indoors and outdoors.
- Easy Installation: Mount in place with hardware or use adhesive — flexible installation options for any project or enclosure.
- Versatile Applications: Ideal for security systems, game buzzers, DIY electronics, automotive warning signals, industrial alerts, and more.
Specifications
- Color: Black
- Material: Plastic
- Size: 11.00 x 3.50 x 1.00 cm / 4.32 x 1.38 x 0.39 in
- Voltage Range: DC 3–24V
- Rated Voltage: 12V DC
- Output Sound Pressure: 90dB
- Operating Frequency: 3300 ± 500 Hz
- Operating Temperature: -20°C to +80°C
- Quantity: 2 pieces per pack
- Country of Origin: Made in Mainland China
What's in the Box
- 2 × Active Piezoelectric Alarm Buzzer
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Frequently Asked Questions
Q: Does this active piezoelectric alarm buzzer require an external signal to operate?
A: No. Because it features an active piezoelectric design, the oscillator circuit is built in. Simply connect it to a DC 3–24V power source and it will immediately emit a continuous warning sound — no external signal generator or microcontroller tone output is needed.
Q: What voltage should I use for the best performance from this alarm buzzer?
A: The buzzer operates across a wide range of DC 3–24V. The rated voltage is 12V DC, which delivers the full 90dB output. It will still function at lower voltages (down to 3V), though sound output may vary slightly.
Q: Can this buzzer be used outdoors or in automotive applications?
A: Yes. With an operating temperature range of -20°C to +80°C and a durable plastic housing, it is well-suited for both indoor and outdoor use, as well as automotive and industrial warning applications.
Q: How do I install the alarm buzzer?
A: Installation is straightforward. You can mount the buzzer using hardware through its housing, or use strong adhesive tape to attach it to a flat surface. Connect the positive and negative leads to your DC power supply and it is ready to use.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.