3500mw 450nm focusable blue Laser Module Laser Engraver part DIY Laser Head with PWM

Laser wavelength: 445nm-450nm blue laser

Spot type: dotted (adjustable)
Output power: 2.5W, 3.5W, 5.5W

Size: 2.5W(33*70mm) , 3.5W(33*70mm)  5.5W(40*70mm)

Drive mode: external ACC constant current drive

Cooling method: forced air cooling
Operating voltage: 12V  DC
Control interface: 2 * 2.54 (TTL control switch, PWM control power)
Shell material: aluminum, surface anodized
Collimator lens: optical glass coating

Laser*1

3Pin  Cable*1

3Pin to 4Pin Cable*1

Safety  Glasses*1