1.high efficency 2.outputpower: 400W, 800W, 1800W 3.LCD display 4.untility current &solar power ... 5.tuv,EC Specification Home Solar 400 Home Backup 400Home Solar 800 Home Backup 800Inverter Output Power 400W800WOutput Current 3.3A6.6ASurge ... ½“ x 6¼” x 10¼” 27cm x 16 cm x 26cm 400W backup power for solar home system UPS