Size ConversionInchesCentimetersPlease according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.Description:NEJE 20W (5.5W Output) 450nm Blue Light Laser Module Head TTL PMW Controller Board DIY Carving Engraving Cutting Machine Engraver Accessory DIY Tools Laser Module Head
TTL / PMW Control Board +Temperature PMW Display
Features:1. Can be used for laser cutting machine, laser engraving machine, CNC, DIY laser.2. Original laser diodes, high-quality LD capping technology, ensure service life.3. Built-in driver board, 40mm threaded copper core with thermal grease compound, temperature sensor, NEJE factory 48 hour 100% power aging test, ensure long time working.4. New lens, clear focus, not stray light, adjustable focal length.5. Can carving / cutting MDF, balsa, paper, wood, fabric, plastic, leather, plywood, foam paper, anodized aluminum, etc.(Not suitable for iron or other metal)
Specification:BrandNEJEMaterial
ABS+ aluminum
Luminous Color
Blue
Section Size
30 * 30mm / 1.18 * 1.18in
Cooling Mode
40mm copper core + heat sink grooves + thermal silicone grease + 15000 rpm cooling fan
Adapter Plug
US plug
Adapter Input Voltage
AC100~240V UL certification high quality
Adapter Output Voltage
DC12V, 2A
Can Engrave
MDF/balsa/paper/wood/fabric/plastic/leather/plywood/foam paper/anodized aluminum
Can NOT Engrave
Metal/glass/stone/ceramics/PCB/stainless steel/reflective material/ transparent material
 PWM/Temperature Tester Board Specification:Power Input
DC12V
Output
PH2.0 4pin (12V, GND, PWM/TTL, temperature)
Mode
3 modes (off, manual pwm, pwm / ttl in)
Temperature Display
Yes
PWM Display
Yes
Manual PWM Control
Yes
Technical Parameters:Module Input
18-20W
Laser Output Power
5.5W (5500mW)
Wavelength
445-450nm
Beam Shape
Dot (focusable)
Working Voltage
DC12V
TTL&PWM Modulation
YES, compatible with both TTL & PWM modulation
Input Voltage
DC12V
PWM/TTL Input
DC3.3~12V
Input Interface
PH2.0-4Pin (+,-, PWM/TTL, temperature), 3Pin (+,-, PWM/TTL), 2Pin+2Pin (+,-) + (PWM/TTL,-)
NOTE
Temperature interface can be disconnected, NEJE provides text instructions for temperature acquisition on wiki.
Drive Mode
External ACC
Safe Temperature Range
<70в„ѓ
Life Time
20,000 hours
Module Weight
202g(The lighter the weight, the smaller the move inertia, the better the performance)
Item Size
80 * 30 * 30mm / 3.15 * 1.18 * 1.18in
Package Weight
700g / 24.69oz
Package Size
36 * 16 * 11cm / 14.17 * 6.30 * 4.33in

Module Test:Material: Plywood, thickness 3mmSpeed 330, cutting 3 times, each cutting 1.0mmSpeed 200, cut 2 times, each cut 1.5mmSpeed 100, cut once, cut 3mm each time
Note(Please pay attention):1. Please wear laser goggles during usage and avoid touching the laser directly with your eyes and skin!2. Do not engrave mirror objects, pay attention to fire, pay attention to pets when working!3. Smoke will be generated when burned, please pay attention to smoke exhaust indoors.4. This laser module is compatible with our NEJE machine. 
Note: For the New NEJE 20W laser module, the working status of the fan is determined by the temperature of the module, and the fan speed is dynamically adjusted according to temperature changes. When the machine stops working, the fan will stop working when the laser temperature drops.

Package Included:1 X
5.5W Laser Engraving Module
1 X
Laser Module Sliding Fixture
1 X
4 Pin Cable(1000mm)
1 X
NEJE PWM/Temperature Tester Board
1 X
110V-240V 12V2A UL Certified Power Supply
1 X
Euro Adapter
1 X
2.5mm L-shaped Wrench
1 X
5mm L-shaped Wrench
1 X
Goggles

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