STI will be closed Monday, May 27. Normal business hours will resume the following day.

Are you ready? Something new is coming!

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The new G3 series is arriving soon!

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View Our Newly Updated Product Application Guides

App Guides

Prevent damage to vape detectors and air sensors.

Detector Covers

Reduce the spread of germs with NoTouch and push buttons.

STI Buttons

Secure important documents in a convenient and accessible location

Metal Enclosure

Alarm and LEDs alert to unauthorized entry.

Select-Alert Alarm Mini Controllers

Protect sensitive devices, big or small.

Wire Cages

Guard against vandalism and environmental damage.

EnviroArmour® NEMA Enclosures

UL/cUL Listed cover offers unmatched protection.

Universal Stopper®

Rely on STI®

STI is a manufacturer of specialty fire, safety and security products. Our products help deter false alarms and prevent theft and vandalism of smoke detectors, fire extinguishers and other essential fire and security equipment.

Protect your valuable outdoor equipment.

EnviroArmour® Waterproof Polycarbonate NEMA ›
EP and EF

Customizable, durable buttons for any environment.

Stopper® Stations Buttons & Switches ›

STI exit alarm prevents theft and vandalism.

Exit Stopper® ›

Keep your life-saving equipment functional.

MED Protective Cabinets ›
STI-7535MED-1 - protective multipurpose cabinet

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