1.The products are made of high quality materials, quality is guaranteed 2. Product performance is stable, long service life 3. Compact design with knob to adjust the volume level 4. This is an amplifier volume control board, very suitable for DIY enthusiasts 5. Wide range of applications, can be used in multiple scenarios Product parameters: Name: Amplifier Volume Control Board Model:XH-A954 Installation size: 26MM (Hole Spacing) Turn the knob left to turn down the volume, switch off the machine. Turn the knob right to turn up the volume Color: Green Material: Plastic+Metal Package Contents: 1 * Volume Control Board 1 set of cables (random color) 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.