... peripheral devices Line interactive UPS rackmount, with pure sine wave output, capacity 1kva-3kva, PF 0.6, LCD display, with full protection. Line interactive UPS with pure sine wave outputMicroprocessor ... Frequency50HZ/60HZ ± 1% self-detectionOutput P.F≥0.6Output WaveformPure Sine WaveWaveform DistortionLiner Load ≤ 5%Battery Backup Time≥ 10min (PC load ...