Living in a region (southern Ardeche) where strong storms are usual, I bought this UPS to protect my video and audio equipment. I connected TV, STB, VCR, DVD player, stereo on the inverter. I had experience of my computer protected with the same type of device. Yesterday during the storm, the current jumped and lamps went out in the house. The TV and decoder were unfazed, (the film was just about to finish) and I could take my time to turn my devices quietly. I am delighted with my purchase.