Enhance your engraving and cutting projects with this Professional Laser Module, designed for precision and versatility. Crafted with a premium aluminum alloy casing, this laser module ensures durability and excellent heat dissipation for extended service life. Available in multiple power options with adjustable or fixed focal lengths, it provides efficient and accurate performance for a wide range of materials and applications. Key Features: · Adjustable and Fixed Focal Length Options: Choose from adjustable focal lengths (5.5W, 10W, 20W) with a range of 20-70mm or fixed focal lengths (30W at 12.6mm and 40W at 15mm) to meet different engraving and cutting requirements. · High-Quality Aluminum Alloy Construction: Durable and wear-resistant casing that provides superior heat dissipation, ensuring stable performance and long-lasting use. · Versatile Material Compatibility: Capable of engraving and cutting on paper, wood, fabric, plastic, leather, anodized aluminum, and more, making it ideal for diverse DIY projects and professional applications. · Superior Engraving Speed and Stability: Designed for high-speed engraving with low power loss and excellent stability, delivering precise and clean results every time. · Easy Installation and Compact Design: Lightweight and compact module with over 30cm long cable, includes screws and washers for convenient and secure mounting on laser engravers, cutting machines, 3D printers, CNC mills, and other equipment. · Wide Application Range: Perfect for hobbyists, CNC engineers, artists, and makers working on laser engraving, laser cutting, and related projects requiring high precision and reliability. Specifications: · Laser Power: 5.5W / 10W / 20W (Adjustable focal length 20-70mm), 30W (Fixed focal length 12.6mm), 40W (Fixed focal length 15mm) · Material: Aluminum Alloy + Electronic Components · Wavelength: 450nm (Blue Light) · Operating Voltage: 12V · PWM/TTL Input: DC 3.3V-12V, 100Hz-50KHz · Input Interface: XH2.54-3 Pin (+, -, PWM/TTL) · Continuous Working Time: Unlimited · Operating Temperature: -20℃ to 70℃ · Dimensions:  - 5.5W / 10W: 105 x 30 x 30mm (4.13 x 1.18 x 1.18in)  - 20W: 120 x 40 x 40mm (4.72 x 1.57 x 1.57in)  - 30W / 40W: 115 x 40 x 40mm (4.53 x 1.57 x 1.57in) · Package Size: Approx. 16 x 6 x 6cm (6.30 x 2.36 x 2.36in) · Package Weight:  - 5.5W / 10W: 170g (5.99oz)  - 20W: 258g (9.09oz)  - 30W / 40W: 263g (9.27oz) Package Includes: · 1 x Laser Module · 3 x Screws · 3 x Washers · 1 x User Manual (English) This laser module delivers precise and efficient engraving and cutting performance across a variety of materials, supported by a durable aluminum alloy body and advanced heat dissipation. Its compact, lightweight design and easy installation make it an essential accessory for laser engravers, cutting machines, 3D printers, and CNC mills, empowering creators to achieve professional-quality results with ease.