When lives and property are at stake, rely on detector testing products from HSI.

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For over 30 years, HSI Fire & Safety has been the recognized world leader in the design and manufacturing of fire safety products. Our patented formulas give you confidence in your testing to know all your detectors are ready to respond.

Join thousands of companies who count on HSI products for 100% compliant and reliable fire safety products.
Our American made detector testing products are used by fire and safety professionals worldwide and meet compliance with global fire alarm codes and standards.