... ce tuv iec certificate 3.promotion price poly solar panel SGP-250w,solar module,solar PV,PV modulesElectrical ... °C to +85°CMax system voltage 1000V DCElectrical characteristicsNOCT: 45+/-2°CVoltage temperature coefficient: -0.33%/°CCurrent temperature coeficient: ... to 290W,more size are avalibale,customize acceptable.solar panel:25 years limited warranty High efficiency:17% Certifications: ...