STI 1100 Stopper II with Horn Flush Mount, Fire Label, Red

Stop false fire alarms and protect critical pull stations with the Safety Technology International Stopper II protective cover. Designed for high-traffic facilities—schools, hospitals, hotels and public buildings—this flush-mount security cover deters accidental or malicious activations while preserving immediate access for legitimate emergencies. When the clear, tamper-resistant polycarbonate cover is lifted, a self-contained 105 dB warning horn sounds locally to draw attention and prevent unnecessary dispatches. The unit ships with a 9V battery for uninterrupted audible protection during power loss and is UL/cUL listed and ADA compliant for code-friendly installation. Its rugged, UV-stabilized construction stands up to outdoor exposure and rough environments, reducing maintenance and replacement costs. Ideal for integration with fire alarm systems, facility monitoring and broader security or surveillance strategies, the STI-1100 bolsters your false alarm prevention program without impeding emergency response. Add the Stopper II protective cover to your site protection plan—order now or contact our team for volume pricing and installation guidance.

• Prevents costly false fire alarms by deterring accidental or intentional pulls and triggering an immediate local warning.
• Loud 105 dB horn alerts staff and occupants instantly, improving on-site response before monitoring or emergency services are engaged.
• Durable, UV-stabilized polycarbonate shield resists vandalism and harsh environments while preserving full accessibility for legitimate use.
• Flush-mount, ADA-compliant design integrates cleanly with existing fire alarm and security systems without obstructing surveillance or monitoring lines of sight.
• Self-contained, battery-powered unit (9V battery included) simplifies installation and ensures operation during power loss; UL/cUL listed for reliability.