The Rigol DL3031 is a cost-effective programmable DC electronic load max. 150V, 60A, 350W. With USB Host, USB Device and RS232 interface. LAN is available as an option. with performance specifications that rival any instrument in its class. With a user-friendly interface including graphical charting, the DL3000 series provides various interfaces for remote communication to meet your diversified test requirements. Test power systems and batteries with configurable static, transient, and advanced application modes.