STI 13220NK Universal Stopper Surface Mount Housing with Horn, No Label, Black

Protect critical access points and alarm devices with the STI 13220NK Universal Stopper protective cover from Safety Technology International. This surface-mount protective cover is engineered to prevent vandalism, accidental damage and environmental contamination—while preserving full, lawful operation of pull stations, entry keypads, intercoms and emergency switches. Constructed of thick, UV-stabilized polycarbonate in a discreet black finish, the cover withstands harsh indoor/outdoor conditions and includes two conduit knockouts to simplify wiring for surveillance and access control integrations.

The built-in 105 dB horn provides an immediate audible deterrent and enhances on-site monitoring and incident response. UL/cUL listed and ADA compliant, the STI 13220NK fits most industry-standard pull stations and is ideal for schools, hospitals, transit hubs and commercial facilities where reliable security and uninterrupted service are paramount. With a three-year guarantee against breakage in normal use, it delivers long-term value for security teams and installers.

Add the STI 13220NK to your security, surveillance and access control deployments to safeguard devices and streamline installation—order now or contact us for volume pricing and integration support.

• Heavy-duty protection without blocking use: secures pull stations, keypads and emergency buttons from vandalism and accidental damage while allowing legitimate access.
• Integrated 105 dB horn: adds an audible deterrent and alarm notification to enhance on-site security and monitoring.
• Durable UV-stabilized polycarbonate construction: weather-resistant for indoor/outdoor use and backed by a three-year breakage guarantee.
• Surface-mount design with conduit knockouts: simplifies installation on walls and accommodates wiring for surveillance and access control systems.
• Discreet black finish with no preprinted label: blends into installations and allows custom labeling for branded security deployments.