Power strip is made of high strength fire-resistance ABS shell, making it fireproof up to 850?, 100% copper wire. Child safety door protection avoid kids from electric shock accident. Full Protection for fluctuations, over-current/over-charge/short circuit/over-heated and electromagnetic interference.Hoteon extension lead with usb design in small size and 2 meter long cord, it is a perfect power supply for travel, home, library, office and business use. Warranty for Extension board only ,not for connected Device.