STI 13500NY Universal Stopper without Horn Housing, Enclosed Back Box, Open Mounting Plate, No Label, Yellow

Protect critical entry controls and alarm points with Safety Technology International’s STI 13500NY Universal Stopper protective cover. Designed for environments where reliability matters, this surface-mounted cover safeguards pull stations, intercoms, keypads and emergency buttons from vandalism, dust and weather while allowing legitimate operation—helping reduce false alarms and downtime for security and monitoring systems. Molded from thick, UV-stabilized polycarbonate, the cover delivers long-lasting impact resistance and is backed by a three-year breakage guarantee. The enclosed back box shields wiring and electronics from moisture and tampering, and the open mounting plate simplifies retrofit installation on existing backboxes to save labor costs. ADA-compliant and UL/cUL listed with NEMA Type 3RX rating, the STI-13500NY meets rigorous performance standards for indoor/outdoor use. Its bright yellow color improves visibility for first responders and facility personnel, making it ideal for schools, healthcare, transportation hubs and industrial sites where surveillance and access control integrity is critical. Specify the STI 13500NY to protect your security hardware—order now to secure pull stations and entry controls across your facility.

• Shields pull stations, keypads and emergency buttons from vandalism and accidental damage to keep security and monitoring systems operational
• Durable, UV-stabilized polycarbonate resists breakage and harsh weather (NEMA Type 3RX) for reliable outdoor and indoor protection
• Enclosed back box protects wiring and electronics while the open mounting plate speeds installation and retrofit on existing surfaces
• Bright yellow finish improves device visibility for first responders and facility staff, aiding rapid identification during emergencies
• ADA-compliant design and UL/cUL listing help maintain code compliance and reduce liability
• Surface-mount construction without horn housing fits a wide range of devices without restricting legitimate use or alarm activation