I used to have the impression that Inverter Backup system does not work at least here in Nigeria since there's this believe that Nigerian will always be unprofessional in there services. That perception changed when a friend introduced me to HIANS Technology Ltd. The company installed a 4KVA Inverter Backup system for my home in Novermber, 2013 and till date the said system still functions optimally. It's an experience I never be I could get from a Company in Nigeria. I am confident to recommend the my friends and anyone who could need their services.