STI (Safety Technology International) — Protective Covers, Enclosures & Accessories

Safety Technology International (STI) is the industry leader in fire alarm protective covers, outdoor enclosures, and equipment guards. From pull station covers that deter false alarms to weatherproof polycarbonate enclosures that protect outdoor fire alarm panels, STI products safeguard your critical life safety equipment against vandalism, tampering, accidental damage, and harsh weather conditions.

Life Safety Consultants carries the full STI product line — over 250 products including Stopper II covers, Universal Stoppers, Weather Stoppers, EnviroArmour enclosures, back panels, and mounting accessories. Fast shipping, competitive pricing, and expert support on every order.

STI Pull Station Covers

Stopper II Series

The STI Stopper II is the most widely installed pull station protective cover in the world. Made from tough, tamperproof polycarbonate, Stopper II covers deter false fire alarms while still allowing legitimate access — simply lift from the bottom to reach the pull handle. Available in flush mount (STI-1100, STI-1200) and surface mount (STI-1130, STI-1230) configurations, with or without integral horn. Custom colors and labeling options are available for ADA compliance and special applications.

Universal Stopper Series

STI’s Universal Stopper covers (STI-13000 series) provide protection for a wide range of pull station brands including Notifier, Edwards, Simplex, and Fire-Lite. The open-spacer design accommodates virtually any single-action pull station, making it the go-to solution when you need a protective cover that fits multiple manufacturers’ equipment.

Weather Stopper Series

Designed specifically for outdoor applications, STI Weather Stopper covers (STI-3100, STI-3150) combine false alarm deterrence with weatherproof protection. The sealed polycarbonate construction shields pull stations from rain, snow, dust, and UV exposure while maintaining full functionality.

STI Polycarbonate & Fiberglass Enclosures

STI’s EnviroArmour line of NEMA-rated enclosures protects fire alarm control panels, notification appliances, and sensitive electronics in demanding environments. Available in polycarbonate (EP series) and fiberglass (EF/EN series), these enclosures feature options for A/C cooling, heating, window panels, and custom configurations. Sizes range from compact 10″ x 8″ units to large 48″ x 36″ cabinets for full-size fire alarm control panels.

STI Back Panels & Mounting Accessories

Complete your enclosure installation with STI aluminum back panels (BPA series) and fiberglass back panels (BPF series) for secure equipment mounting. Additional accessories include swing panel brackets, DIN rail kits, ventilation kits, and replacement locks to customize your installation.

Why Choose Life Safety Consultants for STI Products?

Life Safety Consultants has been a trusted source for commercial fire alarm replacement parts for over two decades. We stock an extensive inventory of STI protective covers, enclosures, and accessories alongside products from Simplex, Edwards, Notifier, Siemens, System Sensor, and other leading manufacturers. Our knowledgeable team can help you find the right STI product for your application — contact us for expert assistance or shop our online store now.

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