About HSI Fire & Safety
In 1979, the original smoke detector test aerosol, SmokeCheck®, was created. Developed to answer a need for full functionality testing of a smoke detector, SmokeCheck received its first patent and UL listing.
Since then, HSI has led the development of additional functional testing mediums and tools for smoke, carbon monoxide and heat detectors. Their patented formulas gives the user confidence in testing to know that all the detectors are ready to respond in case of an alarm.
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