Storz Power, Sol-Ark, 12K Battery or Battery-Less Inverter, 9,000 watt 120/240-208Vac, 50/60Hz, 48VDC, Transformerless Sinewave, Grid Tie/Off-Grid, AC and/or DC Coupled, 2 MPPT PV inputs, with AFCI/GFDI, BTS & Dual AC inputs, 10 Yr. Warr, UL1741-SA (Rule-21), NEMA 3R, 10328