How to Protect Exits without Compromising Safety

Prevent Unauthorized Door Use Before It Becomes a Problem

Need to keep a door unlocked for safety, but want to prevent unauthorized use? The STI Exit Stopper® (STI-6400) is a smart, reliable solution. When the protected door is opened, the alarm sounds and an LED flashes—grabbing attention and deterring misuse instantly.

Perfect for schools, hospitals, retail, and public buildings of any kind, the multifunction door alarm is easy to install and features a stop sign design for added impact. Choose your preferred alarm volume and duration (30 seconds, 3 minutes, or continuous). A key override allows authorized access. In annunciator mode, the alarm will beep several times and reset when the door is closed.

Additional features include:

• Multilingual labels (21 included)
• Low battery warning and extended battery life mode (battery included)
• On/off signal tones
• Optional dry contact Form C relay

When safety is critical, one door shouldn’t be a liability. STI’s Exit Stopper® helps keep people protected—and allows peace of mind.

For indoor use only.

Learn more about STI’s Exit Stopper door protection solutions.