Different from VLD /750/950 VLD 1.2K/1.6K/2K Series offers longer backup time for business workstation. It provides comprehensive LED display for users to monitor the power status. With powerful protection, it secures your data loss from power failure, surge, and sags Built-in super smart charger, shorten 50% of charging time Excellent microprocessor control guarantees high reliability Boost and Buck AVR for voltage stabilization Auto restart while AC is recovering Simulated sine wave Auto-restart while AC is recovering Simulated sine wave Off-mode charging Cold start function USB communication port RJ-11/RJ-45 protection LCD DISPLAY