Line interactive UPS 400-2000VA

12. LED display or LCD display selectable

13. Microprocessor-based digital control

14. Boost and buck AVR for voltage stabilization

15. Auto sensing frequency

16. Wide input voltage range

17. Power-on self test

18. Cold start

19. Auto restart when mains power is restored

20. Auto track mains phase to ensure that inverter output voltage has same phase with utility voltage, reducing transfer time and peak surge

21. Intelligent battery management: battery temperature compensation to extend the battery life; three-stage charging to shorten recharge time

22. Short circuit, battery overcharge / overdischarge, overload, surge protections

23. Automatic charging in OFF mode

24. Optional no-load shutdown

25. Optional RS232 / USB communication port and RJ11 / RJ45 protection

26. Unattended safety shutdown: system alarm and auto Power-On / Off by RS232 or USB interface communicating with PC