DC 12V 120 dB Continuous Piezo Buzzer with Builtin IC Alarm Speaker 2 Pieces Quick overview A pair of compact, volume piezo buzzers designed for 12 V systems. Each unit delivers a continuous alarm tone at 120 dB and includes an internal driving IC for reliable, stable operation. Ideal for security systems, machinery alerts, and DIY electronic projects. Key benefits Loud and unmistakable alert: 120 dB output ensures the alarm can be heard in noisy environments, improving response time to faults or intrusions. Stable continuous tone: Builtin driving IC provides consistent sound without external driving circuits, simplifying installation and reducing wiring complexity. Direct 12 V compatibility: Designed for DC 12 V systems for straightforward integration with common power supplies and control panels. Twopiece set: Includes two identical buzzer units for redundant coverage or duallocation installation. Features and attributes Function: Continuous sound piezo alarm with internal IC for fixedtone signaling. Voltage compatibility: Rated for DC 12 V input. Sound level: Approximately 120 dB at rated conditions for audibility. Quantity: Two pieces included. Installation: Simple twowire connection for easy mounting to most 12 V systems. Reliability: Internal drive electronics reduce the need for external components and help maintain consistent performance. Practical applications Security alarm panels: Use as a primary or backup audible alarm for burglar, door, or perimeter alarm systems. Industrial equipment alerts: Fit to control cabinets, conveyor systems, or machinery to indicate faults, stops, or safety events. Vehicle and utility installations: Suitable for use in noncritical vehicle warning systems, forklifts, trailers, or service vehicles that operate on 12 V electrical systems. DIY electronics and prototypes: Integrate into hobby projects and test rigs where a loud, continuous audible signal is required. What makes this product stand out Builtin IC eliminates the need for external drivers, reducing component count and setup time. decibel output covers larger spaces and louder environments than typical small buzzers. Plugandplay compatibility with DC 12 V sources makes it suitable for a wide range of existing systems. Installation tips Observe correct polarity when connecting to a DC 12 V supply. Mount in a location where the sound is not obstructed for maximum effectiveness. For extended life, avoid continuous operation for long periods at maximum volume unless required by application. What you get Two DC 12 V piezo buzzer units, each producing a continuous 120 dB alarm tone and incorporating a builtin driving IC for stable operation and simple installation.