HSI Fire & Safety Group Patents
| 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 |
