OPTI Durable Series The new DS-I Series UPS provides premium double-conversion back up power and scalable battery runtimes for IT and electrical engineering infrastructure in corporate, healthcare, banking and industrial applications. The entire DS-I Series provides value to customers with demandi ng power environments, including very wide input voltage window, extremely tight output voltage regulation, frequency regulati on, internal bypass, and input power factor correction. Which is perfectly serve their purpose in Servers and Workstation, applicances and small business users Zero transfer time Wide range of input frequency (40∼70HZ) and Output frequency 50/60HZ setting High-performance DSP processor, precision and fast data processing with high reliability Cold start (DC power on) Auto reboot functions Extended battery pack for long service life RS232 and USB port SNMP card slot available The UPS should be charged once every 4 to 6 months if it has not been used for a long time In the regions of hot climates, the battery should be charged and discharged every 2 months. The standard charging time should be at least 12 hours Battery replacement should be performed by qualified personnel Replace batteries with the same number and type of batteries Do not replace the battery individually. All batteries should be replaced at same time following the instructions of the battery supplier Battery maintenance: 1-3KVA UPS only requires minimal maintenance OPTI - On Line