--- product_id: 609515041 title: "Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System" brand: "genmitsu" price: "€ 44.28" currency: EUR in_stock: false reviews_count: 3 url: https://www.desertcart.be/products/609515041-genmitsu-l8-40w-laser-module-upgrade-kit-40w-optical-power store_origin: BE region: Belgium --- # 3 preset focal lengths for precision 40W optical power for max cutting Full safety inspection system Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System **Brand:** genmitsu **Price:** € 44.28 **Availability:** ❌ Out of Stock ## Summary > ⚡ Upgrade your craft with laser precision and power! ## Quick Answers - **What is this?** Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System by genmitsu - **How much does it cost?** € 44.28 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/609515041-genmitsu-l8-40w-laser-module-upgrade-kit-40w-optical-power) ## Best For - genmitsu enthusiasts ## Why This Product - Trusted genmitsu brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Upgrade:** Effortless drop-in replacement for your Genmitsu L8 20W machine - • **Safety First, Always:** Integrated airflow, lens, fire detection & power indicators for peace of mind - • **Designed for Genmitsu L8:** Optimized compatibility ensures peak performance and reliability - • **Power Through Like a Pro:** 40W optical output slices 20mm pinewood & 12mm acrylic in one pass - • **Tailored Focus, Every Time:** Three preset focal lengths (3mm, 8mm, 18mm) for versatile material handling ## Overview The Genmitsu L8 40W Laser Module Upgrade Kit transforms your existing L8 20W engraving machine with a powerful 40W optical output, enabling single-pass cutting of thick materials like 20mm pinewood and 12mm acrylic. Featuring three preset focal lengths for adaptable precision and a comprehensive safety inspection system, this drop-in upgrade ensures enhanced performance, safety, and seamless compatibility exclusively for Genmitsu L8 machines. ## 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: Beastly piece of hardware! (Updated) - 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 desertcart. I'm going to try through Sainsmart directly. I'll update if I get a response. UPDATE: desertcart 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! Review: Grat laser - Easy to install (upgraded from a 20w). Shipping was fast and the laser works great. ## 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. - 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 | |---------------|-------| | ASIN | B0CTMFWSQD | | Brand | Genmitsu | | Color | Grey | | Customer Reviews | 4.8 4.8 out of 5 stars (6) | | Date First Available | 20 February 2024 | | Item Weight | 1.89 Kilograms | | Model Number | LMW40 | | Product Dimensions | 29.97 x 19.99 x 10.01 cm; 1.89 kg | ## Images ![Genmitsu 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) ![Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System - Image 2](https://m.media-amazon.com/images/I/71VW8LZe0dL.jpg) ![Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System - Image 3](https://m.media-amazon.com/images/I/71uPotWvwJL.jpg) ![Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System - Image 4](https://m.media-amazon.com/images/I/71uGyk1uTNL.jpg) ![Genmitsu L8 40W Laser Module Upgrade Kit, 40W Optical Power Output for Powerful Cutting, Three Preset Focal Lengths, Full Set Safety Inspect System - Image 5](https://m.media-amazon.com/images/I/71CcFDIZyTL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Beastly piece of hardware! (Updated) *by J***C on 19 September 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! ### ⭐⭐⭐⭐⭐ Grat laser *by M***H on 21 December 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 17 November 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 . ## 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 - Genmitsu CNC ABS Dust Shoe for CNC Machines with a 52mm Diameter Motor, fits Most 300W-500W Spindle Motors, Hose Adapter Outer Diameter 38mm (1.5″), Transparent - Genmitsu 40pcs End Mills CNC Router Bits, 1/8" Shank CNC Cutter Milling Carving Bit Set Including 2-Flute Flat Nose & Ball Nose, Nano Blue Coat & Titanium Coat, MC40A --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/609515041-genmitsu-l8-40w-laser-module-upgrade-kit-40w-optical-power](https://www.desertcart.be/products/609515041-genmitsu-l8-40w-laser-module-upgrade-kit-40w-optical-power) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-09-22*