True Double-Conversion Online UPS. Wide input voltage range (110~300VAC). Input Power Factor correction 0.98. Output Power Factor 0.80. Generator compatible. LCD User Interface. RS-232 communication port or mini slot for USB / RS-232 / AS400 / SNMP communication. Self-test when UPS start. Over temperature and over voltage protection. Smart battery charger design for optimized battery performance. Optional isolation transformer available.