NEJE 20W Laser Module DIY Kit 450nm Professional Continuous 5.5W Laser Cutting Engraving Module Blue Light with TTL / PWM Modulation for Laser Cutting/Engraving Machine CNC DIY Laser Compatible with Arduino

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About this item

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

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)


Brand: NEJE
Material: 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: <70℃
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 3mm
Speed 330, cutting 3 times, each cutting 1.0mm
Speed 200, cut 2 times, each cut 1.5mm
Speed 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

More Details:

Shipping information

(1) FREE Shipping 10 - 15 business days, (2) Standard Shipping 7 - 12 business days.

Shipping and Delivery Estimates

We ship in-stock orders as soon as possible. This is often within two business days, but there are situations where it may take longer. All estimates are based on business days.


(1) The shipping time mentioned above refers to the estimated time of business days that the shipment will take after an order has been shipped.

(2) Business days do not include Saturday/Sunday and any public holidays.

(3) These estimates are based on normal circumstances and are not a guarantee of delivery times.

(4) We are not responsible for the failures or delays in delivery resulting from any force majeure event, such as natural disaster, bad weather, war, customs issues, and any other event beyond our direct control.

for more information please visit our Shipping Policy Page.

Return and exchanges

Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can't offer you a refund or exchange. To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

for more information please visit our Refunds & Returns Policy page.