10 years quality guarantee; high performance cell and 100% EL test; positive tolerance; TUV IEC CEC MCS approved Temperature coefficientsNOTC 47+/-2°CVoltage temperature coefficient (Voc) -0.36%/°CCurrent temperature coefficient (Isc) +0.033%/°CMinimum power tolerance +/-3%%/°CNOTC: Nominal Operating Cell TemperatureMechanical dataSolar cell 60 poly-crystalline 156X156mmFront glass 3.2mm tempered ...