1.CEand ISO certified 240w polycrystalline solar panels 2.5-year limited warranty 3.excellent performance under ... Max system voltage: 1000V DCNet Weight(kg) 20kg240w polycrystalline solar panels KEY FEATUREShigh cell conversion effciency based on leading innovative photovoltaic ... roof-top systemsoff-grid systemsother on-grid applicationswe produce solar panel 30v,27v,36v,12v etc,different voltage and ...