SDC 400U-SN 400-SN Series Single Gang Siren Alarm Station, Siren 85 db, 12/24VDC, Stainless Steel

Keep entry points monitored and secure with the Security Door Controls SDC 400U-SN single-gang siren alarm station. Designed for door alarms and access-control systems, this compact siren delivers a clear 85 dB audible alert to quickly draw attention during forced-entry or door-unlocked events. The vandal-resistant stainless-steel faceplate provides industrial-grade durability for high-traffic or exposed locations, while the slim single-gang or narrow-frame mount simplifies installation on door frames and gang boxes. Dual-voltage support (12/24V DC) ensures compatibility with most security and surveillance control panels, making it easy to integrate into existing monitoring and alarm systems. Wired connectivity delivers reliable performance without wireless interference, and a 5-year limited warranty backs long-term operation and reduced maintenance costs. Ideal for commercial, institutional, and retail environments that require dependable audible notification and door monitoring, the SDC 400U-SN enhances situational awareness and response times. Add this Security Door Controls siren to your access control or surveillance project to strengthen perimeter security and improve alarm visibility.

• High-impact audible alerts: 85 dB siren quickly notifies staff and deters unauthorized access
• Robust stainless-steel construction for vandal-resistant, long-lasting door alarm performance
• Dual-voltage compatibility (12/24V DC) for easy integration with access control and alarm panels
• Slim single-gang or narrow-frame mounting for fast retrofit on doors and frames without major modification
• US-made reliability with a 5-year limited warranty for reduced downtime and lower total cost of ownership