Fire Testing Machine for Building Materials YY410 UL790 Fire Performance Tester for evaluating surface burning characteristics of building materials and photovoltaic cell modules. Scope of Application This equipment evaluates roofing materials exposed to simulated exterior building fires, assessing fire resistance at distances of 1.82m, 2.4m and 3.9m to Class AC. Also suitable for testing photovoltaic cell module fire resistance. Compliance Standards UL 1730 Smoke Detector