Description: Chip: KA2284; Supply voltage: 3.5V-12V; The magnitude of the level can be adjusted; AC and DC signals can be controlled by jumper; PCB board size: Approx. 29 x21x 13mm/ 1.14x 0.83x 0.51inch Package Includes: 1 Piece Audio Level Indicator Module 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