Testifire is the world's first multi-stimulus detector tester for smoke, heat and CO fire detectors. It enables faster and more efficient testing of both single and multi-sensor detectors. There are two models available - Testifire 1000 for testing smoke and heat and Testifire 2000 for testing smoke, heat and CO. Testifire is the result of several years of technological development and as a result is by far the most advanced tester available. Testifire is UL certified and is approved by leading detector manufacturers from around the world.