The 12V 2A DC Power Supply Adapter is constructed from premium materials, including PVC cable jack and pure copper. Plug: 2.1mm (inner size) x 5.5mm (out size). 90-cm power cord that is not waterproof. Please take note that the polarity of the DC plug is outer negative (-) and inner positive (+). DC Output: 12V 2A (2000mA) 24W, AC Input: 100-240V 50/60Hz. Only electronic devices that have a voltage of 12V and a current of less than 2A—such as 300mA, 500mA, 1000mA, 1.2A, 1.5A, 1.6A, 1.8A, and 2A—are supported. If your device uses 1.8A, you will receive 1.8A. Power adapter, 12v/2a Copper wires with integrated safety features and IC chips provide the strongest and most stable signal possible. Integrated software that prevents sparks when plugged in, protects against overvoltage and undervoltage, short circuits, overcurrents, and overtemperatures, and is silent