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Description
NEJE N40630 7.5W 450nm Laser Engraver Module Kits, N406301. Designed for laser engraver, 3D printer, CNC mill, arduino project. 2. 7. 5W Optical power output, 4mm plywood from 1 pass(speed 100). 3. More Safety, Built in protective glass to protect eyes! Even without wearing protective glasses, the operation is more comfortable. 4. More Quiet, Intelligent drive adjust the cooling fan speed according to laser temperature. 5. Easy use, Digital PWM wave pulse signal generator adjustable frequency duty cycle
1.Designed for laser engraver, 3D printer, CNC mill, arduino project.2. 7.5W Optical power output, 4mm plywood from 1 pass(speed 100).
3. More Safety, Built-in protective glass to protect eyes! Even without wearing protective glasses, the operation is more comfortable.
4. More Quiet, Intelligent drive adjust the cooling fan speed according to laser temperature.
5. Easy use, Digital PWM wave pulse signal generator adjustable frequency duty cycle board for NEJE laser module.
6. The slidable mounting fixture is provided for easy adjustment of focus.
Specification
1. Heatsink Material: Aircraft Aluminum + Brass Shell
2. Luminous Color: Blue
3. Section Size: 40mm x 40mm
4. Cooling Mode: Temperature sensor intelligent control + 10000 rpm 40mm cooling fan
5. Dimension: 60 x 40 x 40mm
6. Adapter Plug: 5.5 2.1 port
7. Can Engrave: MDF/Balsa/Paper/Wood/Fabric/Plastic/Leather/Plywood/Foam Paper/Anodized Aluminum
8. Can Not Engrave: Metal/Glass/Stone/Ceramics/PCB/Stainless Steel/Reflective Material/ Transparent Material
Technical Parameters
1. Optical power output: 5.5W~7.5W
2. Wavelength: 445-450nm
3. Beam Shape: Dot (Focusable)
4. Working Voltage: DC 12V
5. TTL&PWM Modulation: YES, compatible with both TTL & PWM Modulation
6. Input Voltage: DC12V 3A
7. PWM/TTL Input: DC3.3V-12V
8. Input Interface: PH2.0-4Pin (+,-, PWM/TTL, Temperature), 3Pin (+,-, PWM/TTL) , 2Pin+2Pin (+,-) + (PWM/TTL,-)
9. Drive Mode: External ACC
10. Safe temperature range: <60 degrees Celsius
11. Module weight: 202g (The lighter the weight, the smaller the move inertia, the better the performance)
12. Life Time: 10000-20,000 hours
Package Included
- 1 x Laser Engraving Module
- 1 x Laser Module Sliding slot
- 1 x 4 Pin Cable(32cm Cable)
- 1 x NEJE interface tranfer board
- 1 x 2.5mm L-shaped wrench
- 1 x 5mm L-shaped wrench
- 1 x 3pin input cable
Specification:
| Package Weight |
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4.3 ★★★★★
Based on 894 reviews
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Product Reviews
★★★★★ 5
Great book
Format: Paperback
Great book! It is helpful as I work towards my Masters of Science in Applied Artificial Intelligence
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2025
★★★★★ 5
Comprehensive Guide with Practical Insights
Format: Paperback
This is a solid book for understanding the art and science of working with LLMs and other generative AI models. I always struggled with getting the output I was looking for, and wasn't sure how best to "ask" the models for what I wanted. This book did a great job of laying out the strategies and practical guidance to craft the prompts. There were a lot of tips and tricks, but the overall understanding and framework around prompt engineering has been super useful.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2024
★★★★★ 5
A must read!
Format: Paperback
Hands down, the best book on prompt engineering and implementing LLMs. Really enjoyed Michael and James deep dive. Whether you're technical or not, this book is foundational to a deeper understanding in how to properly explore and implement LLMs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 25, 2024
★★★★★ 4
Helpful for GPT/LangChain framework
Format: Paperback
I applaud the authors for putting forth a comprehensive introduction in a rapidly evolving space. I absorbed a lot, helpful as I was developing a prototype — using open source methods.
And that’s where I was disappointed. The LLM and examples are highly adapted to OpenAI’s GPT-x and the bulky LangChain framework, something not obvious until you dig in to the book. Sure, this may be where newbie demand was when the authors began writing. But as the open source models and OpenAI alternatives gain speed (e.g. Llama 3.1, Groq, etc.) this book may quickly need an updated and expanded version to stay relevant.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 7, 2024
★★★★★ 3
Good concepts, but uneven depth
Format: Paperback
Some helpful prompt frameworks, but parts felt repetitive and a few sections stayed too high-level for advanced users. Beginners will likely benefit more than experienced practitioners. If you’re new to prompt engineering it’s a decent starting point; if you’re already building structured prompts daily, it may feel light.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
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