SFM27 Active Buzzer 2PCS 324V 12V 95DB Continuous Black Key benefits Loud, reliable alerts: Produces a clear 95 dB beep to draw attention in noisy environments. Wide voltage compatibility: Operates across 3 to 24 V DC, including common 12 V systems, so it fits a variety of applications. Easy to use: Active buzzer design means it sounds when power is applied without needing external drive circuitry. Flexible signaling: Supports intermittent or continuous operation to match alarm and notification needs. Discreet appearance: Continuous black color blends into control panels and equipment for a professional look. Pack of two: Includes two SFM27 buzzers for multiple installations or spare parts. Specifications and function Model: SFM27 Type: Active buzzer, decibel electronic beep alarm Voltage range: 3 to 24 V DC; nominal 12 V operation supported Sound level: 95 dB Output modes: Intermittent or continuous tone Color: Continuous black Quantity: 2 pieces Why customers need this product Provides a dependable audible alert that is audible over background noise, improving response to alarms. Works with a broad range of DC supplies so it can be reused across different equipment without redesign. Eliminates the need for additional driver circuits, simplifying installation and reducing component count. Compact and unobtrusive styling keeps installations neat while maintaining functional visibility. Compatibility and performance Suitable for integration with alarm control panels, automotive 12 V electrical systems, industrial controllers, and DIY electronics projects that accept a 3 to 24 V DC input. Active operation ensures immediate sound output when powered, with rated 95 dB performance under nominal conditions. Practical applications Security and alarm systems: Use as a warning sounder for doors, windows, or motiontriggered alarms. Equipment and machinery alerts: Provide audible fault or status notifications on industrial equipment and control panels. Automotive and vehicle electronics: Serve as reverse alarms, reminder buzzers, or accessory alerts in 12 V vehicle circuits. What is included Two SFM27 active buzzers in continuous black color, ready for direct connection to compatible DC power sources. Installation note Connect to a suitable 3 to 24 V DC source. As an active buzzer, no external oscillator or driver is required. Choose intermittent or continuous power application to achieve the desired sound behavior.