NF UPS Inverter 2400VA/1440W (24V Input) Works with 2 Batteries
Key Features
Color: Black
Inverter 2400VA / 1440 Watt (24 Volt Input) 2 Batteries of 12 volt connected in series 
2 Batteries of 12 volts connected in series
10 Fan & 20 Energy Saver
Designed for uninterrupted power supply
Power capacity of 2.4 kVA.