The EnviroArmour® Low-Profile Polycarbonate Enclosures provide physical and environmental protection for electrical and electronic equipment while maximizing space efficiency.
Space-Saving Solution Providing Reliable Protection
Built to prevent disruption
Multipurpose activation, engineered to fit.
Fire alarm, access control and intrusion detection. Working together in one customizable, code-compliant button engineered for your environment.
Built for real-world applications
STI’s Application Guides provide practical recommendations for selecting and using products for specific environments and applications. Each guide highlights common challenges, relevant STI product solutions, and key considerations to help customers identify the right protection for their needs.
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Engineered
to fit.
Trusted
to perform.
For over 45 years, STI has engineered reliable, customizable solutions that prevent false alarms, deter vandalism and theft, and keep critical safety systems working the way they should. From schools and hospitals to data centers and industrial facilities, our products are designed for the people who install, specify, and maintain systems where performance isn’t optional. With in-house manufacturing, rigorous testing, and a focus on real-world use, we deliver solutions that fit, perform, and prevent disruption.
Our Products
Featured Fire Products
STI offers a wide range of products designed for protection against false fire alarms without restricting legitimate operation. The fire & safety devices also help prevent theft and vandalism, as well as accidental damage to security protection devices worldwide.
Engineered to fit. Trusted to perform.
Safety doesn’t make headlines when it’s done right. It simply does its job. That’s the power of what we build: products that keep life moving, alarms sounding, systems activating, and people protected.
For nearly five decades, STI has been home to people who solve the problems others overlook. When customers face a challenge, we don’t just deliver a product, we deliver confidence in safety, reliability, and performance that lasts.
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Years in business
Founded 1978, Waterford, Michigan
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Products & SKUs
Covers, cages, buttons, enclosures & more
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Countries using our products
Americas, EMEA, and beyond
4 Value Pillars
1
Proven Performance
For more than 45 years, every STI product has earned trust through dependable design, durable materials, and rigorous testing. We do things right the first time.
1
A Reputation Earned Over Time
• 45+ years of industry leadership
• Global reputation for quality and consistency
• Trusted in mission-critical environments worldwide
2
Proactive Problem Solving
We don’t wait for problems to arise; we identify and resolve them before they disrupt performance. Every solution is designed with foresight, empathy, and real-world field experience.
2
Designed Around Real-World Challenges
• Custom-engineered solutions for unique environments
• Deep expertise across fire, security & electrical systems
• Continuous improvement based on real-world feedback
3
Responsive Partnership
With the care of a family-owned business and the reach of a global manufacturer, STI builds trust through responsiveness, fast lead times, and dedicated support.
3
Support You Can Count On
• Known industry-wide for exceptional customer service
• Industry-leading lead times and on-time delivery
• Dedicated support from concept through installation
4
Uninterrupted Reliability
Every STI solution is designed to prevent disruptions, minimize false activations, and maintain seamless operation; keeping people, buildings, and systems performing without disruption.
4
Made to Keep Things Running
• Engineered to minimize false alarms and downtime
• Designed for reliability across diverse environments
• Proven to protect people, property, and productivity
Trusted by: Fire Protection Contractors • Electrical Contractors • Architects & Specifiers • OEM Manufacturers • Facilities Managers • Distributors Worldwide
CUSTOMIZABLE, DURABLE BUTTONS FOR ANY ENVIRONMENT
Stopper® Stations
Stopper® Stations combine reliable push-button activation with configurable color, text, and housing options — engineered to pass every inspection and fit every jobsite.
Prevent thermostats from tampering and misuse
STI Thermostat Protectors shield HVAC controls from unauthorized adjustments — reducing energy waste,
preventing comfort complaints, and extending equipment life in schools, offices, and facilities.
FAQs
Answers to common questions about protecting life-safety equipment and preventing false alarms.