The STI Stopper II is the world’s most widely installed pull station protective cover. Made from tough, tamperproof polycarbonate, Stopper II covers deter false fire alarms while allowing legitimate emergency access. Available in flush mount and surface mount configurations, with or without integral horn, and with optional conduit spacers. Compatible with most single-action and dual-action pull stations.

Life Safety Consultants carries the full Stopper II line including the popular STI-1100, STI-1130, STI-1200, and STI-1230 models, plus contractor 6-packs for volume installations.