E4 SERIES 20 kVA x 6 Module Three phase Low operating and cooling cost Short return on investment (ROI) time Higher efficiency with eco-mode (up to 98%) Reduced weight/volume/footprint Touch screen TFT LCD user interface Multi language options Advanced data, event logging and analyzing over user interface 1024 real time event log and easy download Data analysis via panel Multi communication options RS232/RS485 (standard) USB Port (standard) SNMP (standard) Advance monitoring options (standard) Remote monitoring and management Programmable dry contacts and programmable custom inputs Optimum generator compatibility Long battery life with intelligent battery management Flexible battery count Automatic and manual battery test Smart fan control 2 years warranty 7/24 technical support and customer service