STI will be closed from December 24th – 26th and December 31st – January 2nd. Normal business hours will resume on January 5th, 2026.
Covers Polycarbonate
STI’s protective covers and polycarbonate cases provide durable defense against vandalism, accidental damage, and environmental wear. Designed for high-traffic and high-risk areas, these tough enclosures help safeguard fire alarms, emergency buttons, and other critical devices. Ideal for construction contractors, building maintenance supervisors, and more, STI’s solutions extend equipment lifespan, reduce maintenance costs, and ensure reliable operation in demanding environments.
Universal Stopper®
Helps Prevent Malicious or Accidental DamageFeatures: 
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Stopper II®
Helps Prevent False Fire AlarmsProducts:21
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Weather Stopper®
Helps Prevent False Fire AlarmsProducts:21
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Fire Environmental Enclosures
Helps Prevent False Fire AlarmsProducts:5
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Polycarbonate Enclosure
Helps Protect Devices Against VandalismProducts:14
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NEMA Protective Cabinets
Helps Guard Against VandalismProducts:4
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Heated Enclosures
Helps Protect Against Damage and the ElementsProducts:14
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Strobe Damage Stopper®
Helps Stop Vandalism and Accidental DamageProducts:7
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Smoke Detector Damage Stopper®
Helps Stop Vandalism and Accidental DamageProducts:4
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Protective Cabinets
Helps Guard Against Vandalism and DamageProducts:2
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Protective Cabinets with Alarms
Helps Guard Against Vandalism and DamageProducts:8
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Single-Gang and Bopper Stopper® Protective Cover
Helps Protect Against Vandalism and False ActivationProducts:17
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Thermostat Protector
Helps Prevent Misuse and TamperingProducts:5
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Stopper® Dome
Helps Prevent Vandalism and MisuseProducts:14
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Keypad Protector
Helps Prevent Misuse and TamperingProducts:10
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MED Protective Cabinets
Helps Protect Against Abuse, Theft and MisuseProducts:3
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Bio Protectors/Snooper Stopper®
Helps Prevent Abuse and DamageProducts:6
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Euro Stopper® Multi Kit
Helps Prevent False Fire AlarmsProduct:1
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Call Point Stopper®
Helps Prevent False Fire AlarmsProducts:12
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