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Product Description (Detailed):

Ensure crucial alerts are heard loud and clear with our versatile 3-24V DC Active Piezo Buzzer, engineered to deliver a continuous, high-decibel alarm sound for a wide range of applications. This robust electronic sounder is an indispensable component for any project requiring immediate and unmistakable audible indication. Unlike passive buzzers, our active piezo buzzer features an integrated oscillation circuit, meaning it produces a continuous tone simply by applying a DC voltage within its broad 3-24V operating range. This plug-and-play simplicity makes integration effortless for hobbyists and professionals alike.

Crafted with a durable ABS plastic shell, this compact and lightweight alarm sounder is designed for longevity and resilience in various environments, from indoor DIY electronics to more demanding industrial or automotive settings. With a typical sound output of 85dB or higher (measured at 10cm), it ensures significant audibility, capable of cutting through background noise to effectively signal warnings, status changes, or operational confirmations. Common applications include security alarm systems, industrial machinery alerts, car modification projects, educational robotics, and general electronic prototypes. Featuring convenient pre-attached lead wires, installation is quick and straightforward, allowing for seamless integration into your circuits. Its efficient piezoelectric design consumes minimal current, making it ideal for battery-powered devices where energy conservation is key. Choose our 3-24V DC Active Piezo Buzzer for a dependable, consistent, and loud audible alert solution that brings critical attention to your systems.

The Piezoelectric Active Buzzer is a high-performance audio alert device that generates an intermittent beeping sound when powered with DC voltage ranging from 3V to 24V. This buzzer comes with an inbuilt oscillating circuit, meaning no external triggering signal is needed — just apply power and it will beep automatically.

Its wide voltage range, low power draw, and compact 42mm cylindrical body make it suitable for various applications such as security alarms, electronic lockers, UPS systems, timer circuits, and DIY Arduino projects.

Key Features:

• Wide operating voltage: 3V to 24V DC

• Intermittent sound alert (pulsing/beeping)

• Compact cylindrical form: 42mm diameter × 16mm height

• Built-in oscillator circuit – just connect DC supply

• Easy to integrate with Arduino, microcontrollers, alarms

• Long life and low current consumption

• Ideal for battery-powered warning systems, vehicles, home automation

Technical Specifications:

How to Use:

1. Connect the positive (+) terminal of the buzzer to the positive DC supply (3–24V).

2. Connect the negative (–) terminal to ground.

3. On power-up, the buzzer will start beeping intermittently.

4. Can be used directly with Arduino, microcontroller outputs, or DC power supply circuits.

Use in alarm circuits, door indicators, voltage warning systems, or sensor triggers.

Applications:

• Security alarms, door buzzers, and access control

• Arduino or Raspberry Pi-based alert systems

• Overheat or smoke detectors

• Timer and event reminder circuits

• DIY home automation sound modules

• Electric bike and battery status indicators

Package Includes:

• 1 × SFM42-AI-CLDZ Active Buzzer (42x16mm)