Quality reliable, Competitive Price, Fast responding after-sales services 5 inch Polycrystalline Solar Panel, 170W-190WSeries number: TM170P-72 - ... Coefficients(V/C)-0.1261NPCT Nominal Operating Cell Temperature47±2 centigrade Mechanical CharacteristicsCable type,Diameter and Length4mm,TUV certified ... Transmission,Low lron,Tempered Glass 4.0mm 5 inch Polycrystalline Solar Panel, 170W-190W