1,Constant Voltage 2,Output: 200W,12V 3,IP67,IP68 4,Certification: CE,RoHS 5,2 years warranty Specification Model No.WTF-D12200CShell ... ≤ 50MV. 3. Efficiency above 80%, temperature ≤ 25 °C. 4.LED switching power supply with overvoltage protection, short circuit protection, overload protection.5. Constant ... type of product or repaired bad product. Waterproof driver 200W 12V led power supply