[product description]: This constant current board supports 15-24 inch LED strips with an input voltage of 9V (a three), which is convenient and flexible to use, and basically the display meets the modification requirements. [Product Specifications]: Length 70MM width 20MM Input voltage: 12-30V voltage Material:PCB+Plastic+Metal colour:Blue Package Contents: 5 * Constant current board 5 * Cable Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.