Main Features: 1. Online double-conversion 2. DSP technology guarantees high reliability 3. True galvanic isolation transformer design 4. Control designed to withstand all kinds of loads 5. Intelligent battery management to prolong battery lifecycle 6. Redundant fan design and independent ventilation enhance durable operation under harsh environment 7. Adjustable battery numbers 8. Accept dual-mains input 9. Parallel operation with up to 4 units (option) 10.Variety of communication options available Product discription: The On-Line-Series is an uninterruptible power supply incorporating double-converter technology. It provides perfect protection specifically for strict load. The double-converter principle eliminates all mains power disturbances. A rectifier converts the alternating current from the socket outlet to direct current. This direct current charges the batteries and powers the inverter. In the event of power failure, the maintenance-free batteries power the inverter. Thus the inverter generates a sine wave AC power, which permanently supplies the loads. Designed with the proven on-line, double conversion architecture, this series of UPS offers the greatest degree of availability in power protection and provides continuous high-quality AC power to connect strict load, especially for the basic equipments in some areas as: finance, communication, government, traffic, manufacture, education and so on. Additionally The UPS provides abundant interfaces such as RS232, SNMP, AS400, and RS485 for supervision and configure.