405nm 50mW djustable focus blue-violet laser Dot modules

Product details
Housing material: copper (nickel)
Wavelength: 405nm (blue-violet)
Voltage: 3 ~ 5VDC (you can use the cell phone battery or three batteries) built special boost constant current driver board
Operating Current: <250mA
Output optical power: 50mW
Diameter: 12mm
Length: 45mm
Connection: 2.1 DC plug

Users must read:

1. Laser Module power is relatively large, prohibiting exposure to the eyes (including the cute little animals), otherwise it will cause permanent eye blindness, consequences.

2. prohibited flammable objects and gas sites use to avoid fires and explosions.

3. ban for children to play.

4. Do not open the module to avoid damage.