STI 13530NB Universal Stopper Housing with Horn and Relay, Enclosed Back Box, Open Mounting Plate, No Label, Blue

Protect critical alarm points without compromising accessibility. The Safety Technology International Universal Stopper protective cover with horn and relay delivers rugged, tamper-resistant protection for pull stations, entry keypads, intercoms and emergency buttons in both indoor and outdoor environments. Molded from thick, UV-stabilized polycarbonate and backed by a three-year breakage guarantee, the enclosure resists impact, dust and grime for dependable performance in harsh conditions. An integrated 105 dB horn and relay enable clear audible notification and direct connection to existing alarm, security and monitoring systems. The surface-mount design features an enclosed back box and open mounting plate to speed installation and secure wiring, while NEMA Type 3RX and ADA compliance meet demanding code and environmental requirements. The clear dome preserves device visibility and the blue variant provides instant identification for life-safety applications. Ideal for building security, surveillance and facilities management, the STI-13530NB Universal Stopper reduces false activations and maintenance costs. Specify this protective cover for retrofits or new builds—order now or contact our team for system integration guidance.

• Keeps pull stations, keypads and emergency buttons operational while preventing vandalism and accidental damage
• Integrated 105 dB horn and relay for audible alerts and easy integration with alarm and monitoring systems
• Thick UV-stabilized polycarbonate with a three-year breakage guarantee for long-lasting outdoor/indoor protection
• Enclosed back box and open mounting plate simplify surface-mount installation and secure wiring
• NEMA Type 3RX and ADA compliant construction, sized to fit most pull stations and life-safety devices