Specification:
1.Dimensions : 10.2 * 22mm ( W * L )
2.Circuit control : 5V buck circuit , constant current output , 6-14V power supply to ensure stable output.
3.Reverse polarity protection : Unique reverse polarity protection design , do not worry about the battery polarity reverse making PCB board burnt.
4.Pin definition: especially designed for 445nm driver board, you need to weld LD pins to the PCB as per our instruction
5.Polarity definition: module casing is positive , tail of PCB is negative

Notice:
1. In order to ensure safety, it is recommended to use good-quality 2pcs of 3.7V lithium batteries (16340,18650,14500 and 18500 battery), do not use low-quality batteries, or you can use 6-14V direct power supply.
2. This PCB board has no potentiometer to allow customers to adjust the current, it has fixed resistance.

Package:
1x 445nm 520nm 3W Laser Diode Drive Driver Board PCB 6-14V Voltage Input