Network Xtreme Rack Tower Series NXRT-2000 1000VA Online Uninterruptible Power Supply battery backup can tower mount, rack mount and wall mount ensuring a good fit in any environment you need a UPS. It’s online double-conversion technology provides conditioned AC power at all times to your business critical networks, phone systems and other electronics on your site. Almost infinite runtimes are also also available through the use of external battery backup units which slide in and out for easy replacement. The power management software (included with purchase) safely closes files and shuts down your devices and runs on any PC connected to the UPS.