| Product | Patent |
| PurCheck® | U.S. Patent No. 9,234,123 |
| Versa-Tools® Heat Detector Tester | U.S. Patent No. 8,353,625 |
| Compositions for testing smoke detectors | U.S. Patent No. 9341607 |
| Method and apparatus for testing detectors | U.S. Patent No. 7587926 |
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Contact Us
1424 Armour Blvd
Mundelein, IL 60060
United States
P: 847-427-8340
F: 847-427-8343
HSI-Europe
Noord 49e
2931GV Krimpen aan de Lek
Netherlands
Tel. +31 10 3115075
Please note that HSI will be closed on Thursday, December 25th - Thursday, January 1st. Our office will reopen on Friday, January 2nd.