The Testifire was the main multicriteria detector tester out there. It can make testing both single and multi-sensor detectors less complicated and more efficient. Testifire 1001 tests sensors by creating warmth and smoke, and the Testifire 2001 checks sensors by developing warmth, smoke, and carbon monoxide in an individual unit. https://testifire-fire-alarm-test36678.boyblogguide.com/33067906/fire-alarm-testing-equipment-by-testifire-fundamentals-explained