STI 1100CR Stopper II with Horn Flush Mount, Custom Label

Prevent costly false fire alarms and protect critical devices with the STI 1100CR Stopper II protective cover from Safety Technology International. Designed for busy campuses, hospitals, hotels and public buildings, this security cover reduces nuisance alarms without interfering with legitimate alerts. The rugged, UV-stabilized polycarbonate shell resists impact and harsh environments while the tamperproof design protects manual pull stations from accidental or intentional damage. A self-contained 105 dB audible horn activates when the cover is lifted, improving on-site notification and aiding surveillance and monitoring workflows. The flush-mount Stopper II fits virtually all manual pull stations, is UL/cUL listed, ADA compliant and backed by a 3-year limited warranty — giving facilities reliable code-compliant protection and lower maintenance costs. Ideal for security, fire safety and facilities teams seeking a proven, low-voltage solution to false alarms. Add the STI 1100CR to your security and monitoring plan today to safeguard pull stations and minimize downtime.

• Stops costly false fire alarms and reduces nuisance triggers for uninterrupted operations
• Protects manual pull stations from vandalism and accidental damage with tamperproof polycarbonate
• Built-in 105 dB horn instantly notifies staff when cover is opened, enhancing on-site security and monitoring
• UV-stabilized, flush-mount design resists harsh environments for reliable outdoor or indoor use
• UL/cUL listed and ADA compliant to help meet code requirements and simplify facility safety planning