It works through locally assembled CPU by converting DC to AC with the help of storage battery. It instantly supplies electricity in the electric line electricity line when the current goes off due to load-shedding or for any other reasons and gives backup of minimum 2-8 hours. This is helpful to use in offices, residences, cyber cafe, Hospitals, Clinic, Shops, Hotels, Community centers, television, VCR, Radio-Cassette-Players, fax, telex, E-mail, Tele-Printers etc. No fuel and extra electrical charge is required for this purpose. Our Service Centers are here to help Call : - 01756972272