Features: 1.Use high-quality materials, 2.Small size 3.Easy to use 4.Stable performance 5.Wide application range Parameters: Input voltage: 3-12V Output voltage: 3-12V Product current: 300mA matters needing attention: The voltage of the connected lamp must match the input voltage. For example, the input voltage of 12V is connected to 12V lamp, and the input voltage of 3V is connected to 3V lamp Color: green Material: PCB Different batches, the silk screen batch number text will be different, it will not affect Package Contents: 5 x Breathing Light Driver Module 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.