Industrial STI-1100

The STI-1100 Stopper II is a flush-mount protective cover for fire alarm pull stations that reduces false activations while keeping the activation point clearly visible. Built from a protective polycarbonate cover, it carries a Fire Label and integrates a horn for audible notification when activated. Designed for flush-wall installation, the unit measures 6.2 in (H) x 5 in (W) x 3.2 in (D), delivering a compact, durable enclosure that fits standard pull-station configurations. As part of the Stopper II family, the STI-1100 is intended for commercial environments where accidental activations can be costly, and is commonly used on high-traffic corridors, industrial facilities, and other areas where tamper-resistance and quick activation are required. The hornFlush-mount configuration with a fire label supports immediate recognition and audible alert, while the protective cover helps shield the activation mechanism from dust, impact, and incidental contact without obstructing access during an actual emergency.