Built-in Power Supply Protection :Certified by UL, it ensures safe use with over voltage, over current, and over temperature protection to keep all of your mobile devices safe from unexpected surges and spikes. The power converter is made of insulating materials and ABS refractory materials to ensure safety while in use. We offer 1-YEAR Warranty from the date of purchase. Power Specifications :Power Supply with Input AC100-240V- 50/60Hz and Output: DC 12V/3A (3000mA), 90cm (3ft) Total Cable Length. Indoor use only !. Plug Design :Standard US 2-Pins Plug & Female Car Cigarette Lighter Connector. (Please check the power input connector of your device. It should be standard male car cigarette lighter plug.). Available for Low Power :This car adapter is ONLY suitable for some low-power car equipment which less than 36W, such as car mp3, oxygen bar, humidifier and so on, NOT for high-power devices (such as high-power car air compressors, waxing machines, etc.) to achieve home use. NOTE :NOT Available for High Power devices that over 36W ! Compatible with 12V DC equipment, please make sure that the output voltage of your electronic device is 12V and the output current is less than or equal to 3A, the rated power is within the range of 36W! This is a 36W low-power converter. If a product exceeding 36W is connected, which will cause not working properly.