a. Parallel Units with a Single Output of up to 40kVA b.True N+1 Redundancy c. DSP Double-Conversion On-line Sinewave Design d. Input Power Factor Correction e. Hot-Swappable User Replaceable Batteries f. LCD Display with Advanced Monitoring for Easy UPS Management g. Programmable 50/60Hz Frequency Conversion h. Optional Remote Emergency Power Off (REPO) i. Wide Input Voltage Window j. Precision Output Voltage Regulation k. Superior Brownout, Surge & Transient Protection l. Optional Extended Battery Banks & Chargers m. pure sine wave ups 10kva /6kva has RS-232C, USB & Optional SNMP/HTTP Agent n. WINPOWER® UPS Monitoring & Management Software.