Testifire 2000 Smoke, Heat, CO Detector Tester Head Unit - Testifire AccessoriesManufactured by Detectortesters, from the Testifire range, our Testifire 2000 Smoke, Heat, CO Detector Tester Head Unit. This system is the first in the world for multi stimulus testing of smoke, heat and CO2 detectors. With detector tester being all in one, its massively increase efficiency. The benefits of the Testifire 2000 Smoke, Heat, CO Detector Tester Head Unit include: Reduced cost of transport due to being all in one system Test times are