Premium  Power  ProtectionAPC  Back-UPS  Pro  provide  battery  backup  and  surge  protection  ideal  for  your  home,  home  office  or  small  business.The  new  Back-UPS  Pro  models  are  equipped  with  premium  features  including  increased  runtime  and  power  capability  for  your  critical  electronics.Sinewave  power  output  -  Ensures  power  quality  without  distortion  or  power  drop  during  an  outage.  Ideal  for  advanced  workstations,  high  end  PCs,  multimedia  devices  and  home  storage.