Install the module height adjuster on the z-axis, and adjust the module height and focus by adjusting the M5 Allen key to slide the module up and down.




Please do not leave the equipment when the equipment is working, long-term stay may cause the material to burn!

Please wear protective glasses before operation!

Please do not touch the laser outlet with your hands. It may burn your hands!

Please avoid strongly impact on the machine!

Children under 14 years of age are prohibited from using this product!

Children over 14 years of age need adult supervision when using this product!

Avoid accidental touch by pets!

How to Focus

E80 is a fixed focus module, the fixed focus position is 25mm away from the heat dissipation structure: as shown in the figure.

How to set the Z Offset in Lightburn?(video)


E80 is a quasi-industrial-grade fixed-focus module. Unlike CO2 lasers, the 450nm semiconductor laser is visible, and the intensity of weak light can be set. Observe the minimum focus by observing the fluorescence reflected on the surface of the gray cardboard through protective glasses Location.

NEJE E80 recommends using NEJE Max 4 equipment control, through variable Z-axis multi-layer sinking settings, cutting from the material surface layer by layer to achieve high efficiency purpose of cutting.

Operation steps controlled by the Z-axis: 1. Reset the motorized Z-axis in the direction of Z0; 2. Find the focus position of the module, and record the distance between the focus and the module; 3. Install the module on the motorized Z-axis, and set the focus position The distance to the honeycomb board is set as the electric Z-axis travel distance, (the distance from the module to the honeycomb platform = the distance from the focus to the module + the distance from the focus to the honeycomb platform), the lightburn software sinking setting parameters = Z-axis travel - material thickness, the first One knife focus is set on the surface of the material.

If the Z axis of your machine is fixed, it is recommended to adjust the focus to the upper middle position of the material when cutting the material, and repeat the cutting one or more times.

How to quickly find focus by observing low light?

1. Adjust the suitable low light through the software. The NEJE mode can be adjusted in the “Settings” column of the NEJE Win software; the GRBL mode can be adjusted in the “Grbl Configuration” of the laserGRBL software, which has been explained above.

2.Put a gray cardboard on the surface of the white material (such as plywood) as a focus reference to find the precise focus. A fine focal point can be observed through the protective goggles or the shade of the module.


Laser & Material Database

Max Cutting depth < 30mm

Typical Material Parameters:

17mm Pine Board With NEJE Max 4

Speed (mm/min): 300
Max Power(%): 100
Air Assist: ON
Number of Passes: 3 (2.5)
Z Offset (mm):(The distance between the module and the surface of the board)-Focal length(25mm) +4mm
Z step per pass (mm): 1.5


Speed (mm/min): 500
Max Power(%): 100
Air Assist: ON
Number of Passes: 2 
Z Offset (mm): (The distance between the module and the surface of the board)-Focal length(25mm) 
Z step per pass (mm): 2

3mm mdf board With NEJE Max 4

Speed (mm/min): 650
Max Power(%): 100
Air Assist: ON
Number of Passes: 1
Z Offset (mm): (The distance between the module and the surface of the board)-Focal length(25mm) 

E80 cutting test(video) :17 mm pinewood

E80 cutting test(video) :10mm birch plywood

E80 cutting test(video) :3mm MDF board

Note: (Number of Passes - 1)*Z step per pass < 7mm (The standard air nozzle is designed for cutting less than 17mm. If you want to increase the cutting of materials larger than 17mm, you can increase the cutting thickness by replacing the plane protection head + metal air pipe.)

The NEJE E80 module adopts NEJE's unique hybrid technology. Compared with similar products, the NEJE module has a smaller focus angle and relatively uniform XY symmetry. It is the perfect work of NEJE after summarizing almost all 4xLD solutions. When using It can well prevent the material from igniting. However, too slow speed setting and unreasonable focus adjustment may cause the material to catch fire.

When cutting, according to the performance of the controller (synchronous belt equipment), it is recommended that the cutting speed be greater than 10mm/s to avoid burning the material caused by staying for a long time. NEJE E80 has very reliable continuous working performance and supports 100% power continuous working , but please pay attention to prevent the risk of fire. NEJE Max 4 door function can be used to extend the flame sensing and emergency stop, and terminate the equipment work.

About air assist


NEJE E80 is equipped with 2 high-temperature-resistant (1000°C) protective lenses, which can be replaced. Pay attention to regularly clean the surface oil and foreign matter according to the actual situation of use. Oil and foreign matter sticking to the surface may cause high temperature to soften the lens.

NEJE E80 can use 2 types of air assist. a. Conical air nozzle in the inner cavity, this method needs to use oil-free and water-free air source, (Note: ordinary oil-water filters can only filter simply, not completely, and need to be cleaned regularly built-in protective lens) b. Stainless steel pipe air nozzle, this method can use oily water air source, easy maintenance, and can quickly clean the lens, the metal pipe needs to be aligned with the focus.

When cutting mdf, leather and high-density materials, it is necessary to add air assistance with a pressure of not less than 30psi.

The air nozzle must be aligned with the cutting port to blow off the carbonized material, otherwise it will be ineffective.

When do you need air assist?

Air-assisted engraving or cutting can only be used for engraving or cutting that produces more carbonized substances. Generally, the depth of engraving is less than 1mm, and the cutting of plywood less than 2mm does not require air assist. A small fan can be used to blow off the smoke generated by the engraving. Air assist is not recommended when engraving images, and adding air assist at this time will destroy image details.

What kind of air pump is suitable for cutting

The main meaning of air assist is to blow off the carbonized material produced by cutting, and the general oxygener and electromagnetic inflator have almost no meaning. only the pressure of the oil pump and air compressor (0.4-1.5mPa) has the effect of blowing away the carbonized material. but it should be noted that the air of the oil pump contains oil and cannot be directly used for the air-assisted module of the closed cavity, otherwise the oil will contaminate the lens, resulting in power drop or damage to the lens. The air pressure of the air compressor can be used for a short time with the closed cavity, but When used for a long time, the water-containing gas will contaminate the lens, cause the power to drop, and even damage the lens.


Power density: 6666W/mm²
Focus size: 0.06x0.06mm
Radiator Size:	40.5 x 56 x 113 mm
Focus position: 25mm from the radiator (manufacturing error ±1mm)
Weight:	600g
Interface:	PH2.0 4Pin + 2Pin(EX Power)
Drive Design:	Built-in  
Input:	24V 3A +
Optical Power: < 24W 
Wavelength:	450nm
Laser Class:	Class 4
Number of Diodes: 4
PWM Input:	VPP(3.3-24V), Recomend 1KHz
Max Speed of the Fan:	10600RPM(Double ball bearing)
Quiet Design: (Dynamic adjustment)Drive the built-in control ic, judge the working state and adjust the fan work.
ESD Design: Yes
Temperature feedback:Yes
Recommend Cutting & Carving Depth:	<16mm (The data is tested by NEJE users, and it needs to be done under more accurate focusing and adding correct and certain strength of air assist.)
Stainless Steel Carving:	Yes
0.1mm Stainless Steel Cutting:	Yes



24V: Power positive .

GND: Power ground or power negative.

TTL/PWM: TTL = PWM, input 3.3V~24V to turn on laser module, conect to GND to turn off laser module.

Temperature: do not connect, please ignore.

Connect 24V and GND pin to 24V power, ensure the power adapter is sufficient, 3A-5A is recommended.

Connect TTL/PWM pin to your control board PWM output pin.

E80 driver has very high conversion efficiency, input 65W can output 24W optical power.


Control Board

Multi-interface adapter board (24V > 3A):


NEJE PWM Control Borad with Temperature Display:



Compatible with NEJE 3 Max (the motherboard model is higher than V1.1), only need to update the 24V power supply, the relay and valve control module are compatible, the temperature will be higher than in 12V mode, and there is no problem with indirect use. It is recommended to connect other devices through the control board, and it is recommended to use the device with Z-axis control, which is conducive to the full performance of the E80.


Although this module adopts internal air-assisted design, long-term use may not prevent dust or a small amount of smoke from affecting the lens. It is recommended to clean the lens with a clean cotton swab. Dust or smoke may overheat the lens and cause the lens to burn out. Re-acquire the lens Will delay your use.

How to clean the len?(video)


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