Safety Technology International (STI) manufactures fire, safety, and security products, including protective covers, potential false alarm preventers, and wire guards.
Safety Technology International (STI) is a global manufacturer specializing in fire, safety, and security products that help prevent false alarms, theft, and vandalism. Best known for the original Stopper II® pull station cover, STI offers a comprehensive range of solutions including polycarbonate protective covers, heavy-duty wire guards, buttons, switches, and alarms.
These products are designed to protect essential safety equipment—such as smoke detectors, fire extinguishers, and emergency lights—ensuring they remain operational and accessible when needed. With headquarters in the United States and offices in the UK, STI serves commercial and residential markets worldwide with durable, code-compliant safety devices.
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Most STI products come with a three-year warranty or a one-year limited warranty from the date of purchase. Specific details can be found on the electronic warranty form on their website.
For many STI audible devices, you must remove the Mylar tab from the battery contact area to activate the sounder.
Rinse with water to remove abrasive dust, then wash with mild soap or detergent using a soft cloth. Rinse again and dry with a soft cloth. Do not use razor blades or scrub aggressively, as this may damage the surface.
Insert the security key into the lock mechanism. Rotate counterclockwise to unlock and access the device, or rotate clockwise to lock and secure the cover.