2pcs DC 915V Wired Electronic Buzzer Alarm Sounder Speaker Continuous Alarm Sound HF4218W Overview A pair of wired electronic buzzers (model HF4218W) that deliver a continuous alarm tone when powered by DC 915V. Built for straightforward replacement or integration into existing alarm and alert systems. Key benefits Immediate audible alerts: Continuous alarm tone that draws attention to faults, intrusions, or status changes so problems are noticed and addressed quickly. Wide voltage compatibility: Operates across DC 915V, making it suitable for common 12V vehicle systems, alarm panels, and many control circuits. Simple installation: Wired connection to a DC supply provides a direct, reliable hookup with minimal setup. Dual pack for convenience: Two identical units included for redundancy, paired installations, or spare replacement. Reliable function: Designed specifically as an alarm sounder to provide consistent continuous output while powered. Important attributes Function: Continuous alarm buzzer sounder for audible alerts. Voltage compatibility: DC 915V input range. Connection type: Wired power connection for straightforward integration. Model: HF4218W. Quantity: 2 pieces per package. Construction: Durable housing and compact form factor for flexible placement and mounting options. Performance: Consistent continuous tone suitable for closerange alerting applications. Practical uses and applications Security systems: or add alarm sounders on home or commercial security panels to ensure intrusions trigger an audible warning. Industrial equipment and machinery: Signal faults, endofcycle conditions, or maintenance reminders on machinery and control cabinets that provide DC 915V outputs. Automotive and DIY projects: Integrate into 12V vehicle alarm setups, custom alert circuits, or hobby electronics requiring a continuous audible alert. Installation tips Connect the buzzer to a stable DC 915V supply with correct polarity for reliable operation. Mount the units where the sound can be heard clearly, and route wires to avoid pinching or abrasion. Use one unit as a spare or place both for dualpoint alerts where . Technical summary Model: HF4218W Quantity: 2 pieces Voltage: DC 915V Sound type: Continuous alarm Connection: Wired Choose these HF4218W buzzer sounders when you need a simple, compatible, and dependable continuous alarm solution for DC 915V systems.