1. AC 180-250V input, output Voltage: DC 12V; Rated Power:200W. Weight 1.2 KG. Using percentage of power supply is 80% 2. Shell Material: Aluminum Alloy; Main Color: silver white 3. Automatic protection for: short circuit / overload / over current 4. The transformer be designed in constant voltage, warranty be invalid if using for lamp which designed constant current solution. CE RoHS certification, one year warranty.