1. Important Safety Information
Read all instructions before use. Failure to follow these instructions may result in damage to the product or personal injury.
DANGER: VISIBLE LASER RADIATION
AVOID EYE OR SKIN EXPOSURE TO DIRECT OR SCATTERED RADIATION.
For engraving or cutting wood, fabric, leather, ceramics, stone, glass, metal and other materials. Average power < 5.5W, Peak power < 7.5W, Pulse duration > 10 us, λ =440-455nm. Complies with DIN EN 60825-1: 2015-07.
- Caution: Flammable materials. Ensure proper ventilation and fire safety measures are in place.
- Avoid direct eye exposure during operation. Always wear appropriate laser safety goggles.
- Do not touch the laser directly.
- Some materials (e.g., PVC) may emit harmful gases when processed. Understand the material characteristics before use and ensure adequate ventilation.
- 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.
Laser safety warning icons: Mind The Fire, Wear Goggles, No Touching, Mirror Object.
2. Product Overview
The NEJE N30820 Laser Module is a high-performance blue laser head designed for CNC laser cutting and engraving machines. It features a 5.5W optical power output and is built with advanced cooling and intelligent drive systems for stable and efficient operation.
NEJE N30820 Laser Module with its compact design.
Overview video demonstrating the NEJE N30820 Laser Module's capabilities.
3. Setup Instructions
3.1 Unpacking and Initial Preparation
- Carefully unpack the NEJE N30820 Laser Module kit.
- Before first use, remove all protective films from the device.
- Verify all components are present as shown in the kit contents diagram.
Contents of the NEJE N30820 Laser Module Kit, including the module, air assist tube, and wiring.
3.2 Electrical Connection
Connect the laser module to the corresponding interface on your motherboard. The module supports various input interfaces:
- PH2.0-4Pin: (+, -, PWM/TTL, Temperature)
- 3Pin: (+, -, PWM/TTL)
- 2Pin+2Pin: (+, -) + (PWM/TTL, -)
The temperature interface can be disconnected if not required. Refer to neje.wiki for detailed instructions on temperature acquisition.
Wiring diagram for the NEJE N30820 Laser Module, showing 12V, GND, PWM, and Temperature connections.
Detailed view of the NEJE N30820 Module's internal connections, including Fan, 12V, GND, TTL (3.3V-12V), Temperature sensor, and Easy Focus mechanism.
4. Operating Instructions
4.1 Focusing the Laser
Adjust the focus to achieve the desired spot size for your engraving or cutting task. Set the appropriate focus and parameters according to the tutorial. For detailed operations, refer to neje.wiki.
Diagram illustrating the NEJE N30820 focus with air assist. Recommended focus is 32mm from the material, with a 35mm distance from the module base. Air assist pressure should be 0.6-1.5 Mpa for optimal cutting of materials like plywood <8mm.
4.2 Material Compatibility and Performance
The NEJE N30820 Laser Module is capable of processing a wide range of materials. Below is a general guide:
| Material | Marking | Engraving (Craving) | Cutting |
|---|---|---|---|
| MDF | ✓ | ✓ | ✓ |
| Plywood 3mm | ✓ | ✓ | ✓ |
| Plywood 8mm | ✓ | ✓ | ✓ |
| MDF 3mm | ✓ | ✓ | ✓ |
| MDF board 8mm | ✓ | ✓ | ✓ |
| MDF board 18mm | ✓ | ✓ | ✗ |
| Balsa 8mm | ✓ | ✓ | ✓ |
| Hard wood 18mm | ✓ | ✓ | ✗ |
| Acrylic 8mm (Dark Color) | ✓ | ✓ | ✗ |
| Brushed Acrylic (transparent) | ✗ | ✗ | ✗ |
| Corrugated cardboard < 8mm | ✓ | ✓ | ✓ |
| Card Paper 0.5mm | ✓ | ✓ | ✓ |
| Paperboard 2mm | ✓ | ✓ | ✓ |
| Weeding invitation paper 0.5mm | ✓ | ✓ | ✓ |
| Colored A4 Paper (Not White) | ✓ | ✓ | ✓ |
| A4 Paper (White) | ✗ | ✗ | ✗ |
| Spray art stencils from mylar sheet (less than 1mm thick) | ✓ | ✓ | ✓ |
| Heat Transfer Vinyl | ✓ | ✓ | ✓ |
| Bamboo | ✓ | ✓ | ✓ |
| Solid rubber | ✓ | ✓ | ✗ |
| Non-woven | ✓ | ✓ | ✓ |
| Cotton | ✓ | ✓ | ✓ |
| Linen | ✓ | ✓ | ✓ |
| Velvet | ✓ | ✓ | ✓ |
| Canvas | ✓ | ✓ | ✓ |
| Fabric polyester | ✓ | ✓ | ✓ |
| Fabric synthetics | ✓ | ✓ | ✓ |
| Leather < 2mm | ✓ | ✓ | ✓ |
| Leather < 4mm | ✓ | ✓ | ✗ |
| Plastic | ✓ | ✓ | ✓ |
| PPR | ✓ | ✓ | ✗ |
| ABS Sheet+2mm (Dark Color) | ✓ | ✓ | ✓ |
| PVC Sheet 2mm (Dark Color) | ✓ | ✓ | ✓ |
| Black and PVC transparent board | ✗ | ✗ | ✗ |
| Black foams (EPE) | ✓ | ✓ | ✓ |
| KT Board | ✓ | ✓ | ✓ |
| EVA foam | ✓ | ✓ | ✓ |
| Bakelite | ✓ | ✓ | ✗ |
| Brushed Glass | ✗ | ✗ | ✗ |
| Cobblestone | ✗ | ✗ | ✗ |
| Brushed ceramic | ✗ | ✗ | ✗ |
| Frosted Metal | ✗ | ✗ | ✗ |
| PCB Board | ✗ | ✗ | ✗ |
| Anodised Aluminium | ✓ | ✗ | ✗ |
| Brushed Stainless steel | ✓ | ✗ | ✗ |
| Mirror Stainless steel | ✗ | ✗ | ✗ |
| Gold | ✓ | ✗ | ✗ |
Material compatibility for marking, engraving, and cutting. (✓ = Compatible, ✗ = Not Compatible)
Visual representation of material compatibility for the NEJE N30820 module.
Cutting Performance Examples (Plywood 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
Max cutting & carving depth: 8mm.
Cutting speed (plywood 3mm, with air assist, clear edge): 120mm/min at 100% power from 1 pass.
5. Maintenance
- After Use: Turn off the device and store it in a dry place. Keep away from children.
- Cleaning: Periodically clean the laser lens and the module's heatsink to ensure optimal performance and heat dissipation. Use a soft, lint-free cloth and appropriate cleaning solutions if necessary.
- Cooling System: The module features a smart driver that dynamically adjusts fan speed based on temperature. Ensure the fan is free from obstructions to maintain effective cooling.
6. Troubleshooting
If you encounter any issues with your NEJE N30820 Laser Module, please refer to the following general advice:
- No Laser Output: Check all electrical connections (12V, GND, PWM/TTL) to ensure they are secure and correctly wired. Verify the power supply is providing the correct voltage and current.
- Poor Engraving/Cutting Quality: Re-check the laser focus. Ensure the material is compatible and the correct power and speed settings are applied for the specific material and desired outcome. Clean the laser lens if it appears dirty.
- Overheating: Ensure the cooling fan is operating correctly and is not obstructed. Verify the ambient temperature is within acceptable operating limits.
- Software Issues: Ensure your CNC software is correctly configured for the NEJE N30820 module and that all drivers are up to date.
For more detailed troubleshooting guides and technical support, please visit the official NEJE wiki at neje.wiki.
7. Specifications
| Feature | Specification |
|---|---|
| Model | NEJE Module N30820 |
| Heatsink Material | Aircraft Aluminum + Brass Shell |
| Luminous Color | Blue |
| Laser Diode | NUBM0A with NEJE Cap technology |
| LD Current | 3.2A |
| Module Input Power | 20-30W |
| Optical Power Output | 5.5W (5500mW) |
| Wavelength | 445-450nm |
| Beam Shape | Dot (Focusable) |
| Min Focus Spot Size | 0.05 x 0.05mm |
| Working Voltage | DC 12V |
| Input Current | 3A |
| PWM/TTL Modulation | YES, Compatible with Both TTL & PWM Modulation |
| PWM/TTL Input Voltage | DC 3.3V-12V (0-20KHz) |
| Input Interface | PH2.0-4Pin (+,-, PWM/TTL, Temperature), 3Pin (+,-, PWM/TTL), 2Pin+2Pin (+,-) + (PWM/TTL,-) |
| Drive Mode | External ACC |
| Temperature Sensing | YES (Built-in temperature sensor) |
| Safe Temperature Range | <70 ℃ |
| Cooling Mode | 40mm copper core + Heat Sink Groove + Thermal silicone grease + 15000 rpm cooling fan |
| Fan Speed | 15000RPM (Double ball bearing), Smart driver dynamically adjusts fan speed |
| Light Feedback | YES |
| Module Dimensions | 80 x 30 x 30mm |
| Radiator Size | 30x30x80mm |
| Module Weight | 202g |
| Life Time | 20,000 hours |
| Max Cutting & Carving Depth | 8mm |
| Continuously Working (CW) | Unlimited |
| Brushed Stainless Steel Capability | YES |
| Mirror Stainless Steel Capability | NO |
Detailed specifications for the NEJE N30820 Laser Module.
Dimensional drawing of the NEJE N30820 Laser Module, showing key measurements and mounting points.
8. Warranty and Support
- Warranty: The NEJE N30820 Laser Module comes with a 2-year (20000h) warranty.
- Manufacturer: Shenzhen Zhi xinjie Technology Co., Ltd.
- Manufacturer Address: Building 1 Floor 5, ShanKeng Inner Ring Road No.6, ShanKeng Industry Park, ShanXia Village, PingHu Town, LongGang District, ShenZhen City.
- EU Authorized Representative: Prolinx GmbH, Brehmstr.56, 40239 Duesseldorf Germany.
- Service Website: For further support, tutorials, and detailed documentation, please visit neje.wiki.
- PDF User Manual: A comprehensive user manual is available in PDF format. You can access it directly via this link: NEJE N30820 User Manual (PDF).
9. User Tips
- Check Package Contents: Upon receiving your laser module, carefully check all items against the kit contents diagram to ensure everything is included.
- Ventilation is Key: Always operate your laser module in a well-ventilated area to disperse fumes and prevent material combustion.
- Eye Protection: Never operate the laser without wearing certified laser safety goggles to protect your eyes from direct or scattered laser radiation.
- Experiment with Settings: Different materials and desired effects will require varying power and speed settings. Start with lower settings and gradually increase them while monitoring the results.
