Rated power 4000W Peak power 8000W Input voltage DC12V DC24V DC48V Output voltage 100VAC or 110VAC or 120VAC or 220VAC or 230VAC or 240VAC±5% Unload current less than 1.5A 1A 0.8A Output frequency 50Hz±0.5Hz or 60Hz±0.5Hz Output waveform Pure Sine Wave Waveform distortion THD<3%(Linear load) USB port 5V 1A Max.efficiency 90% Input voltage range 10-15.5V 20-31V 40-61V Low voltage alarm 10.5±0.5V 21±0.5V 42±1V Low voltage protection 10±0.5V 20±0.5V 40±15V Over voltage protection 15.5±0.5V 31±0.5V 61±1V Low voltage recover 12.3±0.5V 24±0.5V 48±1V Over voltage recover 14.8V±0.5V 29.5V±0.5V 59V±1V Protect function Low voltage Alarm at first, voltage continuously reduce. LED Red light on & shut down Over voltage LED Red light on, shut down Over load LED Red light on, shut down Over temperature Alarm at first, tempurature continuously rise. LED Red light on & shut down Short circuit LED Red light on Input reverse polarity Fuse burn-out Working temperature .-10°-+50. Storage temperature .-30°-+ 70°