This UPS has very bad quality used this product since 3 months Voltas vn2-4kva that is not better than Su-Kam UPS Voltas UPS has a problem its charging slow very slow I compare it to Su kam UPS then Su-Kam is very good then Voltas Voltas 1 problem mode then you can its try when you buy it so I didn’t recommended it to buy when you go to buy UPS then please choose Su-Kam and also Luminous is better thank you