APC UPS Power Management (daemon)

 apcupsd provides UPS power management for APC products, including most BackUPS
 series models (including USB), SmartUPS V/S, SmartUPS (NET/RM), and Matrix
 series.
 .
 It controls and monitors the status of UPS and allows your computer to run for
 a specified length of time on UPS power, and then executes a controlled
 shutdown in the case of an extended power failure.