APC Back-UPS 500VA, AVR, IEC outlets BX500CI

• Adjustable voltage sensitivity
  Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications.
• Adjustable voltage-transfer points
  Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation.
• Audible alarms
  Provides notification of changing utility power and UPS power conditions
• Automatic self-test
  Periodic battery self-test ensures early detection of a battery that needs to be replaced.
• Battery failure notification
  Provides early-warning fault analysis on batteries enabling timely preventive maintenance