[product ]: This constant current board supports 15-24 inch LED strips with an input voltage of 9V (a set of 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 products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.