TF2001 is a Testifire Smoke, Heat, and CO Detector Test Kit. The Testifire 2001 kit includes the Testifire 2000 Head Unit, 1x smoke capsule, 1x CO capsule, 1x Solo 727 Battery Charger, and 2x Solo 770 Battery Batons 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.