SFM-20B 3V-24V Active Buzzer

The SFM-20B 3V-24V Active Buzzer is a compact, reliable sound emitter engineered for efficient operation across a wide input range. Designed for easy integration into consumer and industrial electronics, it delivers a consistent alert tone and requires only a DC voltage to operate.

• Operating voltage: 3V to 24V for broad compatibility with diverse power sources.
• Sound frequency: 2,300 Hz to provide a clear and recognizable alert.
• Compact diameter: 20 mm to fit tight spaces and compact assemblies.
• Lightweight: approximately 5 grams to minimize added mass in designs.
• Durable internal construction for extended operational lifespan.

Compared with similar models, the SFM-20B stands out by supporting a broader voltage range while maintaining stable sound output, offering an advantage for designs that require flexible power input without sacrificing alert consistency. Its small footprint and low weight make it suitable for space-constrained applications where reliable acoustic signalling is required.

Employing advanced piezoelectric-based active buzzer technology, the SFM-20B delivers energy-efficient performance and rapid response to DC drive signals, simplifying circuit design and reducing power consumption while retaining dependable tone characteristics.