... module conversion efficiency up to15.5% 2)25-year limited warranty on power output 3)TUV,UL,IEC61215,IEC61730,ISO,MCS 190W ... Monocrystalline Solar Panel, Positive Tolerrance,High Efficiency,TUV,MSC,CE Certified characteristics ... %/°CNominal Operating Cell Temperature(NOCT)47±2°CSTC:Irradiance 1000WSQM Module Temperature 25°C AM=1.5