1W 1.6W 3W 445/447nm blue laser drive circuit board 12V 3A step-down constant current circuit.
Circuit control: 5V buck circuit, constant current output, 5.8-12V power supply to ensure stable output
Dimensions: 10.2 * 22mm (W * L)
Reverse polarity protection: Unique reverse polarity protection design, you need not worry about the discharge battery will burn board
Pin definition: 445nm driver board designed specifically for the pad, you simply press the pin welded to the triangular arrangement , not like other boards, like, to cut off a pin, or staggered welding!
Polarity definition: module enclosure is positive, the end of the pad is negative,
Recommend using two 3.7V lithium battery (16340,18650,14500 and 18500 powered), or directly using