Fronius Inverter Fronius, Rule-21 Firmware up-grade kit Please log in to see price or purchase this item SKU: 360-0120 Details Fronius, Rule-21 Firmware up-grade kit, for Primo 10-15kW and Symo 10, 12 & 15kW, 208-240, includes: 1, UL-1741-SA (Rule-21) Label, 1 Firmware Up-Grad... DetailsBackDetailsFronius, Rule-21 Firmware up-grade kit, for Primo 10-15kW and Symo 10, 12 & 15kW, 208-240, includes: 1, UL-1741-SA (Rule-21) Label, 1 Firmware Up-Grade USB Stick, & Instructions, Qty 1 Kit
