This AIMS 1000 Watt pure sine inverter charger features an easy hardwire terminal for AC input and output. Its simple design makes for an easy install and includes all protections and has a selectable battery charger. Perfect for an RV, boat, sump pumps and other applications that use city power and inverter power. Once this inverter is installed, it will automatically go back an forth between city power and inverter power. If city power is lost, the inverter will automatically keep your devices running as long as the inverter has battery power. No frills! Economical and easy to use.