1000va online double conversion ups system for critical server network and telecommunications equipment 2u rackmount form factor with an installed depth of only 135 in 343 cm expandable battery runtime with optional external battery packs bp24v15rt2u bp24v28 2u maximum of 1 per ups or bp24v70 3u multiple battery packs can be daisy chained full time sine wave 200 208 220 230 or 240v 2 output uninterruptible power supply ups continuously converts raw incoming ac power to d