Description
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.
Key Features and Benefits
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Wide Operating Voltage: Works efficiently between 3V and 24V DC, making it compatible with most microcontrollers, batteries, and industrial power supplies.
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High Decibel Output: Produces a powerful 95dB continuous sound at 12V, ensuring the alert is heard even in noisy environments.
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Active Drive Circuitry: Features built-in oscillation circuitry—simply apply DC power to trigger the sound without needing an external frequency source.
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Durable Construction: Built with high-quality ABS material, the SFM-27 is designed for longevity and stable performance under varying temperatures.
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Easy Installation: Includes pre-tinned wire leads and integrated mounting holes for quick and secure attachment to any surface or enclosure.
Technical Specifications
Parameter Specification Model SFM-27 Type Piezoelectric / Continuous Sound Operating Voltage 3V – 24V DC Rated Voltage 12V DC Current Consumption <12mA at 12V DC Sound Pressure Level ≥ 95dB (at 10cm distance) Resonant Frequency 3100 ± 500 Hz Operating Temp -20°C to +60°C Dimensions 30mm (Diameter) x 15mm (Height) Mounting Hole Spacing 35mm
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