Inverter Specification Rated Continuous power:3000W Surge output power: 6000W Standby input power: 3000W<30W DC Input Voltage : 24V DC input voltage range:20~30VDC High battery shut down:19.5V±1V Low voltage shut down: 40V AC output voltage (nominal): 120VACand 240VAC AC output frequency:60±2Hz AC output waveform: Pure sine wave Conversion efficiency: ?91.6% Ambient operating temperature range: 32?-104?/0?-70? Cooling method:Intelligent temperature controlled fan or the load power reaches to the half of the inverter power Protection: Input low voltage protection, Input high voltage protection, overload protection, temperature protection, short circuit protection, battery reverse protection. Packings: inverter, cable, fuse, manual,warranty card. NOTE:The fuse is for the replacement of the fuse inside of the inverter as a backup. No need of change for usage in the first time.