1.solar panel: 20Wp 2. certificate: CE, EPL, IEC 3.polycrystalline silicon Solar PanelType: HF020M-18/F1. MaxiumPower (Pm): 20 Wp2. Open-circuit voltage(Voc): 21.6V3. Short-circuit curreng(Isc): 1.26A4. Voltage at Pmax(Vmp): 17.3V5. Current at Pnax(Imp): 1.16A6. Maximum system voltage: 715VDC7. Operating temperature: -40 °C +85 °C8. Dimension of module(mm): 536 x 353 x 289. Weight(kg): 2.6 Solar ...