technical specifications output capacity - 500 va output voltage - 300 watts nominal output voltage - 230 volts output connections - 3 x iec 320 c13 (batt backup), 1 x iec 320 c13 (surge) 2 x iec jumpers replacement battery cartridge - rbc2 (1x) typical backup time at half load - 13.9 minutes (150 watts) typical backup time at full load - 2.4 minutes (300 watts) interface port - db-9 rs-232, usb general features **audible alarms **usb connectivity **automatic restart after ups shutdown **user-replaceable batterie **automatic self-test **battery replacement without tools **battery-protected & surge-only outlets **dataline surge protection **hot-swappable batteries **led status indicators **power conditioning **resettable circuit breakers **safety-agency approved **serial connectivity **transformer-block spaced outlets