Usage Tips:How to use: Connect the red wire to the positive pole after the power board, and the yellow wire to the negative pole after the power board. Do not connect the wires incorrectly. Due to different batches, there may be differences in product appearance, color, and printed text, which will not affect the use. Colour:Random Color(Color is random, no specification is accepted) Material:PCB Package Contents: 1 * LED Light Board kit Only the above package content, other products are not included. Note: Light reflection 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.