STI 13330NW Universal Stopper with Horn and Relay Enclosed Flush Back Box, No Label Included, White

Secure critical alarm and access devices without impeding legitimate use with the Safety Technology International STI-13330NW Universal Stopper security cover. Designed for facilities that demand reliable protection — schools, hospitals, commercial buildings and municipal projects — this protective cover reduces false alarms, prevents vandalism and ensures devices remain operational during emergencies.

Manufactured from UV-stabilized polycarbonate, the STI-13330NW withstands indoor/outdoor conditions and heavy use while maintaining visibility for surveillance and monitoring. The enclosed flush back box supports a neat, tamper-resistant install and accepts devices with a maximum 4" protrusion. Integrated horn and relay provide an audible alarm and seamless connection to fire, security and access control systems for faster response and coordination.

This model ships without a label for flexible deployment and is compatible with pull stations, keypads, intercoms, emergency buttons and duplex outlets. Whether you’re upgrading fire equipment enclosures or adding protective covers to a new build, the STI-13330NW from Safety Technology International delivers durable, code-conscious protection. Add it to your security and access control strategy today.

• Protects emergency and access devices from accidental activation and vandalism while allowing full operational access
• Built-in horn and relay provide immediate audible alert and integration with alarm systems for faster incident response
• Rugged, UV-stabilized polycarbonate resists impact and outdoor exposure for long-lasting security performance
• Enclosed flush back box delivers a clean, tamper-resistant installation that fits dual-action pull stations, keypads, intercoms and more
• Low-profile design (max 4" protrusion) maintains visibility and accessibility without obstructing surveillance or monitoring lines of sight
• White finish blends with institutional and commercial environments for discreet, code-compliant protection