Riello sentinel pro online ups riello sep 3000 the riello sep 3000 3000va sentinel pro online ups has evolved from the highly successful dialog ups series the riello sep 3000 3000va has a unique modern design and improved electrical characteristicsthe riello sep 3000 3000va uses on line double conversion technology resulting in the highest levels of reliability and maximum protection for critical loads such as servers and it and voicedata applicationsthe front mimic panel has been enti