STI 6403 Exit Stopper Multifunction Door Alarm with Remote Horn, 95 or 105 dB Alarm when Activated, not for outdoor use

Prevent unauthorized exits and secure emergency egress points with the Safety Technology International STI 6403 Exit Stopper door alarm. Designed for indoor security and access control, this multifunction door alarm delivers selectable 95 dB or 105 dB alerts and includes a remote horn to ensure audible detection across larger spaces. Battery-powered with extended-life mode and a low-battery warning, the unit is easy to install on top, side or adjacent to almost any door for quick deployment and minimal disruption.

Operators can choose alarm duration on-site—30 seconds, 3 minutes or continuous—or switch to annunciator mode for a softer beep-and-reset behavior when doors are propped. A key-operated override permits authorized exits without sounding the alarm, while optional Form C dry-contact relay and wired connectivity let you integrate the STI-6403 with building monitoring, CCTV and access control systems for centralized surveillance and incident logging. The red stop-sign housing, multilingual labels and audible warnings help deter misuse in retail, healthcare, education and warehouse environments. Add the STI 6403 to your security and monitoring strategy to improve compliance and reduce unauthorized door usage—order now or contact us for integration support.

• Deters unauthorized exits and entries with a selectable 95 dB or 105 dB alarm and remote horn for broader coverage
• Flexible on-site operation: choose 30 seconds, 3 minutes or continuous alarm, or use annunciator mode for door-propped alerts
• Key-operated override enables authorized exits without triggering the alarm to reduce false alarms and workflow disruptions
• Battery-powered with extended-life mode and low-battery warning for dependable indoor operation and low maintenance
• Integrates with building security and monitoring systems via optional Form C dry-contact relay and wired connectivity for CCTV/access control triggers