Features: Ensuring stable energy output for flashlight driver board and headlamp circuit board, delivering efficient power conversion across extreme temperatures. Built in smart overload protective automatically regulates current flowing, safeguarding LED bulbs from fluctuations during prolonged operational. Ideal for outdoor enthusiasts, professional technicians, and hobbyists requiring compatibility with multiple LED specification. Perfect for night expeditions, repairs, or workshop projects where quick installation is critical for sensitive tasks. Engineered with PCB featuring copper layers, this driver board withstands humid/dusty environments while maintaining optimal thermal conductivity. Specifications: Component:PCB Size:Approx.28x19mm/1.11x0.76inch Package Includes: 2 Optional Package: Package 1 Include:1Pc Flashlight Driver Board Package 2 Include:2Pcs Flashlight Driver Board note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.