2 Pack DC 12V Active Electronic Buzzer Alarm Beeper Compact, reliable audible alarm that produces a continuous 100 dB tone for clear detection and quick response. The active design requires only a 12V DC supply to operate, so no external oscillator or complex wiring is needed. Key benefits Immediate attention: 100 dB continuous sound provides a loud, unmistakable alert for alarms, faults, and status notifications. Simple wiring: two terminals make connection straightforward to 12V DC systems, control boards, and power supplies. Ready to use: active buzzer operates directly from a 12V DC source, reducing setup time and extra components. Versatile fit: compact form and straightforward mounting let you install the buzzer in control panels, enclosures, equipment housings, or hobby projects. Important attributes Function: Active electronic buzzer producing a continuous audible tone. Voltage: Designed for DC 12V operation. Sound level: Approximately 100 dB for strong audio presence. Terminals: Two terminals for easy positive and negative connections. Quantity: Supplied as a pack of two identical units. Practical applications Security and alarm panels: Use as door, window, or intrusion alarms to provide a loud, continuous alert when triggered. Equipment status and fault indicators: Install on machinery or control panels to signal malfunctions, emergency stops, or process warnings. DIY electronics and hobby projects: Integrate into prototypes, robotics, or custom control systems that need a reliable audible indicator. Installation tips Connect the positive terminal to a 12V DC source and the negative terminal to ground. Mount in a location where the sound can escape from the enclosure for audibility. Verify polarity before power up to ensure correct operation. What this product solves Replaces weak or inconsistent audible indicators with a consistent, volume alarm. Simplifies alarm design by eliminating the need for an external tone generator. Provides a compact and reliable solution for both professional equipment and hobbyist builds. This 2 pack of DC 12V active buzzers offers a practical, easy to integrate audible alarm solution for a wide range of electrical and electronic applications.