http://home.att.net/~ASchw/upsmonitor.html
The correct location of the archive is:
http://home.att.net/~ASchw/upsmon2.zip
UPS Monitor is designed for most APC Uninterruptible
Power Sources, monitors power line status and shuts
down the operating system on low battery conditions.
The newly released version 1.2a now supports the plug and play cable number 940-0095B shipped with most APC UPS's supporting smart signaling.
http://home.att.net/~ASchw/upsmonitor.html
Source: Lone Peak Automation (