12V 2A DC Power Supply Adapter is made of high quality materials: high grade pure copper, PVC cable jack. Plug: 5.5mm(out size) x 2.1mm(inner size). Non-waterproof, 90CM power cord. Please note the DC plug polarity is inner Positive (+) and outer Negative (-). AC Input: 100-240V 50/60Hz, DC Output: 12V 2A (2000mA) 24W. Only electronic devices with 12V voltage while current is less than 2A are supported, such as 300mA, 500mA, 1000mA, 1.2A, 1.5A, 1.6A, 1.8A, 2A If your device draws 1.8A, then 1.8A will be provided. 12v 2a power adapter With built-in safety protections and IC chip copper wires promote maximum signal stability and strength. Built in software under voltage and over-voltage protection, short-circuit protection, over-current protection, over temperature protection, no spark when plug in, quiet and not overheat, no need to worry about any fires, explosions or shocks occurring, make sure your device works normally while charging. Ldeal for LED Strips, CCTV System, DVR NVR Surveillance System, LED light strip, Bluetooth speaker, keyboard, TV boxes, router and other Small Power Devices or applications using 12v power supply with compatible plug size. Just buy an ac adapter and you can power most of the small 12v 2A devices.