Apcupsd (APC UPS Daemon) is an open source app for monitoring UPSes and performing a graceful computer shutdown in the event of a power failure.

Apcupsd can be used for power mangement and controlling most of APC's UPS models on Unix and Windows machines.

Apcupsd works with most of APC's Smart-UPS models as well as most simple signalling models such a Back-UPS, and BackUPS-Office. During a power failure, apcupsd will inform the users about the power failure and that a shutdown may occur.

If power is not restored, a system shutdown will follow when the battery is exhausted, a timeout (seconds) expires, or runtime expires based on internal APC calculations determined by power consumption rates.

Apcupsd is a cross-platform application that runs on Mac OS X, Linux, Tru64, Win32, Solaris as well as other OSes.

What's New in This Release: [ read full changelog ]

BUG FIXES:
· Fix missing status and spurrious incorrect status on newer BackUPS CS
· models using USB interface.
· USB compatibility fixes for Mac OS X Lion
· USB driver support for newer Microlink models on Mac OS X Lion and Windows
· Ignore transitions to battery due to calibration (possible if user
· initiates calibration, then exits apctest and starts apcupsd before
· calibration completes.
· Fix truncation of long UPS model names such as "Smart-UPS RT 5000 XL"
· Fix MODEL vs. APCMODEL confusion. Remove APCMODEL and rename old MODEL
· aka 'mode' to DRIVER.