Pearlight 12V IP67 waterproof LED power supply Aluminum Alloy Transformer AC90-130V(US) or AC170-250V (Europe)to 12 Volt DC Output (300W /UPC:746591873813) 1.DC 12V 300W. Weight 2.5KG. Using percentage of power supply is 80%, i.e the power of load is 240 watt, you should choose 300W output transformer, performance be the ideal. 2. Shell Material: Aluminum Alloy; Main Color: silver white, 3 outputs. AC lead wire be WITHOUT plug, When youconnect, keep 3 blue cable together and 3 brown cable wrapped together to load. 3. Automatic protection for: short circuit / overload / over voltage / high temp 4. Wiring instruction for DC output: Please make the 3 outputs be joint to load while the load over 100W, this way be good for transformer's life span. Load's wattage not over 80% of rated power to be ideal performance. 5. The transformer be designed in constant voltage, warranty be invalid if using for lamp which designed constant current solution. CE RoHS certification, two years warranty.