The circuit board is a precision component. After receiving the package, it supports 7 days without reason to return the product without opening the original package. After the original package is opened, no return is provided. After sale, please consider whether you have the ability to install it manually before purchasing. Do not purchase if you do not have the ability to install! Our company does not provide trial play/trial loan/trial service. Thank you for understanding!
520nm 30mW APC Boost Laser Circuit Board Laser Diode Driver Board 3-7V Power Supply
Output Voltage: 4-6V
Wavelength：450nm 520nm Blue Green Laser
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