---
product_id: 612106272
title: "L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System"
price: "S$1101"
currency: SGD
in_stock: true
reviews_count: 3
url: https://www.desertcart.sg/products/612106272-l8-40w-laser-module-upgrade-kit-40w-optical-power-output
store_origin: SG
region: Singapore
---

# 40W optical power output 3 preset focal lengths for precision Full safety inspection system L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System

**Price:** S$1101
**Availability:** ✅ In Stock

## Summary

> ⚡ Upgrade your craft with laser precision and power!

## Quick Answers

- **What is this?** L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System
- **How much does it cost?** S$1101 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/612106272-l8-40w-laser-module-upgrade-kit-40w-optical-power-output)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Integrated airflow, lens, and fire detection for worry-free operation
- • **Precision Focus:** Three adjustable focal lengths (3mm, 8mm, 18mm) for versatile cutting
- • **Seamless Upgrade:** Drop-in replacement for your L8 20W, no hassle, max efficiency
- • **Power Through Materials:** 40W laser cuts 20mm pinewood & 12mm acrylic in one pass
- • **Long-lasting Performance:** Over 10,000 hours of reliable laser service time

## Overview

The Genmitsu L8 40W Laser Module Upgrade Kit transforms your L8 20W engraving machine with a powerful 40W optical output, enabling effortless cutting of thick materials in a single pass. Featuring three preset focal lengths for adaptable precision and a comprehensive safety system including airflow, lens, and fire detection, this module ensures both performance and protection. Designed exclusively for Genmitsu L8 machines, it offers over 10,000 hours of durable operation, making it the ultimate upgrade for serious makers.

## Description

Experience powerful laser engraving and cutting with the Genmitsu L8 40W Laser Module. Effortlessly upgrade your L8 20W machine, unlocking over 40W of optical power for enhanced cutting efficiency. Boasting over 10,000 hours of average laser service time, it guarantees durability and consistent performance. The LED front panel enhances monitoring, providing clear visibility and control with features like power indicator, air detection, and flame detection for heightened safety and efficiency. Elevate your craftsmanship with the Genmitsu L8 40W Laser Module, where innovation meets precision.

Review: Grat laser - Easy to install (upgraded from a 20w). Shipping was fast and the laser works great.
Review: great replacement unit but take care on install - no instructions come with the unit. you will need to move he left y limit switch up to accommodate the wider body of the new module....make sure to do before starting .

## Features

- Upgrade Your Cutting Ability: Elevate your L8 20W machine with the Genmitsu L8 40W Laser Module. This drop-in upgrade offers effortless replacement, ensuring hassle-free enhancement for maximum cutting efficiency. Note: Laser Power Output 40000mW, This is a laser class 4 module, please wear necessary module if you use if seperately.
- Powerful 40W Optical Output: Experience the unparalleled power of the Genmitsu L8 40W Laser Module, delivering over 40W of optical power. Cut through materials like 20mm Pinewood and 12mm black acrylic effortlessly in a single pass!
- Efficient Focus Adjustment: Enjoy flexibility with 3mm, 8mm, and 18mm adjustment levels, allowing easy adaptation to various material thicknesses.
- Safety and Monitoring: Integrated features such as airflow detection, lens detection, fire detection, and a power indicator bar provide intuitive monitoring for a safer work environment.
- Compatibility Notice: Please note that this laser module is specifically designed for Genmitsu L8 engraving machines. Ensure compatibility before purchase to maximize performance and functionality.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Best Sellers Rank | #718,869 in Arts, Crafts & Sewing ( See Top 100 in Arts, Crafts & Sewing ) #2,035 in Jewelry Making Engraving Machines & Tools #10,144 in Craft Cutting Tools |
| Customer Reviews | 4.7 out of 5 stars 6 Reviews |

## Images

![L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System - Image 1](https://m.media-amazon.com/images/I/71SS3ryYrSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Grat laser
*by M***H on December 21, 2025*

Easy to install (upgraded from a 20w). Shipping was fast and the laser works great.

### ⭐⭐⭐⭐⭐ great replacement unit but take care on install
*by F***R on November 17, 2025*

no instructions come with the unit. you will need to move he left y limit switch up to accommodate the wider body of the new module....make sure to do before starting .

### ⭐⭐⭐⭐⭐ Beastly piece of hardware! (Updated)
*by J***Y on September 19, 2024*

I used this 40w laser module to upgrade my 20w Genmitsu L8 Laser cutter/engraver. It's a beefy brick of metal, larger and heavier than the 20w module, and is a simple drop-in swap. It cuts like a phaser weapon. It should though for $600.00. That's half the price of an entire L8 20w system. It comes with a 24v 10a power supply to replace the original 24v 6a supply because of the greater current draw of the larger module. There are no instructions for installation although it's obvious how. It took me about 10 minutes to do it. That said it's not obvious that you have to unscrew and move the Y axis limit switch stop pin inside the front left corner because of the larger 40w frame otherwise there will be a collision upon power up. Also note that this larger module's cooling fans are considerably louder than the 20w. Unfortunately, the module I just received has a defective air sensor and thus can't display the presence of air assist pressure. The light never changes to green from red. I'm trying to get a replacement but apparently can't do so through Amazon. I'm going to try through Sainsmart directly. I'll update if I get a response. UPDATE: Amazon did agree to send me a replacement laser module after all. I'll not need it since, while waiting for it's arrival, Jamie at Sainsmart reached out to me and provided an immediate solution to my problem. Epic operator error 🥴 was the diagnosis. When the machine powers up the air flow sensor is calibrated. If there is air flowing at that moment the sensor sets that as the bottom reading and naturally can't indicate anything higher. (Version 1.1 of the operation manual should probably provide this tip.) I was turning on the machine with the air assist pump already running and thus no green indicator on the module. Great +1 for Jamie immediately recognizing that issue. Five stars across the board now!

## Frequently Bought Together

- Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System
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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-03-16*