SFM-27 Piezoelectric Electronic Buzzer (3-24V DC)

Overview

The SFM-27 Piezoelectric Buzzer is a high-performance, industrial-grade audible alarm designed for versatility and reliability. Engineered to deliver a clear, high-decibel continuous tone, this active buzzer is an essential component for DIY electronics, industrial machinery, and home security systems.

Whether you are working on an Arduino project or a commercial warning system, the SFM-27 provides a loud, consistent alert with a wide operating voltage range.

• Wide Operating Voltage: Works efficiently between 3V and 24V DC, making it compatible with most microcontrollers, batteries, and industrial power supplies.

• High Decibel Output: Produces a powerful 95dB continuous sound at 12V, ensuring the alert is heard even in noisy environments.

• Active Drive Circuitry: Features built-in oscillation circuitry—simply apply DC power to trigger the sound without needing an external frequency source.

• Durable Construction: Built with high-quality ABS material, the SFM-27 is designed for longevity and stable performance under varying temperatures.

• Easy Installation: Includes pre-tinned wire leads and integrated mounting holes for quick and secure attachment to any surface or enclosure.

  Technical Specifications

  <12mA at 12V DCSound Pressure Level≥ 95dB (at 10cm distance)Resonant Frequency3100 ± 500 HzOperating Temp-20°C to +60°CDimensions30mm (Diameter) x 15mm (Height)Mounting Hole Spacing35mm

  Parameter	Specification
  Model	SFM-27
  Type	Piezoelectric / Continuous Sound
  Operating Voltage	3V – 24V DC
  Rated Voltage	12V DC
  Current Consumption