STI will be closed on Friday, April 18th. Normal business hours will resume on the following Monday.
Fire Pull Station Protectors
Protective covers help safeguard fire alarm pull stations, electrical switches, and other essential devices from accidental or intentional damage. Designed for durability, the pull station covers add a layer of protection against vandalism and false alarms while ensuring reliable operation of fire safety equipment.
Universal Stopper® Fire Alarm Covers
Helps Prevent False Fire AlarmsFeatures: 
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Stopper II®
Helps Prevent False Fire AlarmsProducts:22
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Weather Stopper®
Helps Prevent False Fire AlarmsProducts:20
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Fire Environmental Enclosures
Helps Prevent False Fire AlarmsProducts:5
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Stopper II® Contractor Packs
Helps Prevent False Fire AlarmsProducts:5
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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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