SFM 20B Buzzer

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SFM-20B DC 3–24V Piezoelectric Alarm Buzzer (95 dB) The SFM-20B piezoelectric alarm buzzer is a compact and efficient sounder designed for alarm and notification applications. Oper ating across a wide 3–24V DC voltage range, it offers flexibility for use in a variety of electronic projects, including Arduino-based builds and car alarm systems. With a 95 dB sound pressure level, it delivers a loud, clear alert that is easy to hear in different environments. Designed for efficiency, this buzzer features low energy consumption, making it suitable for battery-powered devices. Its compact 23 × 12 mm size allows easy integration into space-constrained designs. Installation is straightforward thanks to two mounting holes spaced 30 mm apart and 90 mm connection wires for added convenience. Key Features Wide operating voltage range: 3–24V DC Loud and clear 95 dB sound output Low power consumption Compact and lightweight form factor Easy installation with mounting holes and long wires Suitable for alarm and communication system applications Specifications Parameter Value Model SFM-20B Type Piezoelectric Buzzer Operating Voltage 3–24V DC Sound Pressure Level 95 dB Current Rating 12 mA Sound Frequency 3300 ± 500 Hz Size 23 × 12 mm Wire Length 90 mm Mounting Holes Distance 30 mm Package Contents 1 × SFM-20B DC 3–24V Piezoelectric 95 dB Alarm Buzzer Show more