High reliability of the connection - without interruptions in case of electric shocks and natural disasters;
4.Increase akara mgbe n'ọnọdu nke CCD igwefoto, na-akpaghị aka idozi eletrik na ngwaahịa dechapụ, na àjà ihe ọṅụṅụ-elu kpọmkwem n'ọnọdu;