Features:

• Includes - CD with software, Cord Management Straps, Free trial of anti-virus - firewall - email privacy - system recovery and online backup software, USB cable, User Manual
• UPS = Uninterrupted Power Supply to run your PC or Macintosh computer for a limited time during a power failure
• Adjustable voltage sensitivity
• Adjustable voltage-transfer points
• Audible alarms

Editor Reviews:

Product Description:
APC Back-UPS RS / 900VA, 540 Watts / Input: 120V / Output: 120V / Interface Port: USB / Runs computer during power failure Automatic restart of loads after UPS shutdown Automatic self-test Battery replacement without tools Battery-protected and surge-only outlets Boost and Trim Automatic Voltage Regulation (AVR) Cold-start capable Dataline Surge Protection Hot-swappable batteries Intelligent battery management LED status indicators APC Lifetime data recovery warranty Multiple mounting methods Power conditioning Resettable circuit breakers Safety-agency approved Serial Connectivity Transformer-block spaced outlets USB connectivity User-replaceable batteries Output Power Capacity - 540 Watts / 900 VA Max Configurable Power - 540 Watts / 900 VA Nominal Output Voltage - 120V Output Connections - 3 NEMA 5-15R (Surge Protection), 4 NEMA 5-15R (Battery Backup) Nominal Input Voltage - 120V Input Frequency - 47 - 63 Hz Input Connections - NEMA 5-15P Cord Length - 6 feet (1.83 meters) Input voltage range for main operations - 88 - 139V Input voltage adjustable range for mains operation - 78 - 152V Battery Type - Maintenance-free sealed Lead-Acid battery with suspended electrolyte, leakproof 1 Included Battery Modules Typical recharge time - 8 hours Replacement battery cartridge - RBC32 1 RBC Quantity Typical Backup Time at Half Load 17.6 minutes (270 Watts) Typical Backup Time at Full Load 5.3 minutes (540 Watts) Dimensions - Height 9.00 inches (229 mm) x Width x 4.00 inches (102 mm) x Depth 12.75 inches (324 mm) Weight - 20.50 pounds (9.32 kg)

Rating : - great, but monitor s/w doesnt record transients
After 1 month, I am happy with the BR900
We tend to get a fair number of quick, transient power outages here.
The BR900 keeps my PC running just fine.

I have had similar APC BR-series in Asia (220Volt). The one thing it had that
this doesnt have is the s/w would record transient power issues.
I am using APC PowerChute Personal Edition on Vista. It states
"Note: Power problems of a very short duration are not recorded here"
My European BR-series running PowerChute on XP would log all power events,
even the short ones.
Now, the lack of recording in my BR900 could be a "feature" of the Vista version of PowerChute rather than the BR900 itself. I wish it would record every type of power event that it handled.
For example, it would be nice to get an idea of how often the voltage trim feature kicked in. I am considering purchasing more APC UPS, and I would like to now if i really need these trim features.

Regardless of the logging, the BR900 is working and keeping my PC up and running