STI will be closed on November 27th and 28th. Normal business hours will resume on December 1st.
Steel Web Stopper® (STI-9602)
STI's super tough cage is extremely effective in reducing malfunctions and damage to smoke detectors where vandalism or accidental damage is prevalent. Guard is constructed of heavy-duty 9-gauge steel wire with corrosion-resistant polyester coating.
Subscribe
Get the latest STI product news sent to your inboxMore videos
STI Videos
Safety Technology International, Inc. Overview
STI manufactures high-quality protective covers, cages, alarms, and custom push buttons that safeguard essential life-safety and security devices. Trusted worldwide, STI’s innovative product line helps prevent vandalism, false alarms, and accidental damage, ensuring long-lasting protection and reliable performance for the equipment that protects people and property.
STI Videos
Stopper II® with Spacer Installation
Learn how to easily install the Stopper II® with spacer, the industry’s most trusted protective cover for manual pull stations. For over 40 years, this patented design has helped prevent false fire alarms without restricting legitimate activation. Ideal for schools, hospitals, and public buildings needing reliable alarm protection.
STI Videos
Steel Web Stopper® High Profile, Surface Mount (STI-9610)
The Steel Web Stopper® high-profile wire guard (STI-9610) protects smoke detectors from vandalism and accidental impact. Constructed of heavy-duty steel wire with a corrosion-resistant coating, this surface-mount design ensures reliability in high-traffic or exposed environments like warehouses, gyms, and commercial buildings.