APC Smart-UPS 5000VA Tower/Rack-mountable UPS - 5000VA/4000W - 9.4 Minute - 2 x NEMA L6-20R, 2 x NEMA L6-30R - SUA5000RMT5U

Adjustable voltage sensitivity - Provides the ability to adapt the UPS for optimal performance in specific power environments or generator applications.
Adjustable voltage-transfer points - Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation.
Audible alarms - Provides notification of changing utility power and UPS power conditions
Automatic self-test - Periodic battery self-test ensures early detection of a battery that needs to be replaced.
Boost and Trim Automatic Voltage Regulation (AVR) - Gives higher application availability by correcting low and high voltage conditions without using the battery (not available on all models).
Cold-start capable - Provides temporary battery power when the utility power is out.
Disconnected battery notification - Warns when a battery is not available to provide backup power.
Hot-swappable batteries - Ensures clean, uninterrupted power to protected equipment while batteries are being replaced
Intelligent battery management - Maximizes battery performance, life, and reliability through intelligent, precision charging.
Network manageable - Most models provide remote power management options of the UPS over the network. Many do not have NMC embedded.