SYMO 8.2-3-Mwith WLAN, LAN and web server When the unit is registered within 30 months of the warranty can be extended by 3 years (total 5 years, "Fronius warranty plus", transfer of the cost of material performance, service and transport). Fronius inverters are supplied with a standard warranty of 2 years. The warranty period can be extended to up to 10 years free of charge by registering at www. solarweb. com! Art. no. 6640825 Manufacturer No. 4,210,039