APC's PowerChute Plus has a long track record on many platforms. Thankfully, the Linux graphical client shares the same look and feel as PowerChute clients on other platforms. Most functionality is also the same across operating systems, but, unfortunately, the Linux version currently lacks network-based management. The PowerChute Plus client shows battery and load status using bar charts. Shut down and logging options, along with various system tests, are accessible and can be easily initiated from the client.
Installation is via an RPM file, making installation on Red Hat compatible systems a piece of cake.
The 1400 has six outlets and a SmartSlot. There are a number of SmartSlot modules including ones supporting multiple servers and SNMP and web-server management. The 1400 has a unique battery enable key that doubles as a link to an optional external battery. The 1400 is a solid package, but PowerChute Plus is really the killer app. MinuteMan's Sentry is quite a handy UPS management package.