About this item Widely used on small dry camp and off-grid ligthing applications Waterproof IP-65 Rated Junction Box : Advanced water and dust proof level (complete protection against environmental particles and low pressure water jets) Easy Installation with pre-drilled hole Corrosion-resistant aluminum frame for extended outdoor use, allowing the panels to last for decades as well as withstand high winds (2400Pa) and snow loads (5400Pa), Lightweight anodized aluminum frame and reinforced Safety and anti-Reflection coated glass 3.2mm thick (tempered + patterned) Warranty: 5-year material and workmanship warranty Solar Panel Specification Maximum Power （Pmax）：20W Open Circuit Voltage（Voc) ： 21.6V Short Circuit Current （Isc）：1.33A Maximum Power Voltage（Vmp）：18V Maximum Power Current（Imp）：1.11mA Maximum System Voltage（Imp）： 1000DC Size ：290*275*17mm STC:lrradiance1000w/m2，Temperature 25℃,AM=1.5 Charge Controller System current: 10A No-load loss: 10mA/20mA/30mA/4m0A / 12V; 13mA / 24V Solar input voltage: <55V System voltage: 12V / 24V Auto Overvoltage protection: 17.0V Balanced charging voltage: 14.6V Boost charging voltage: 14.4V Floating charge voltage: 13.8V Boost charging return voltage: 13.2V Over discharge return voltage: 12.5V Undervoltage: 12.0V Over discharge voltage: 11.0V Light control voltage: light control on 5V, light control off 6V Overload and short circuit protection: 1.25 rated current 30 times second; 1.5 times rated current 5 seconds overload protection action; ≥ 3 rated current short circuit protection Weight: 140g Note Please allow 1~3mm error due to manual measurement. Pls confirm your address, if you have and problem, please feel free to contact with us. Email address b2c2@isolarpartner.com