Multi-control: Control the start and stop of the fan and pump according to the laser intensity, increase the life of the fan and pump, or control it manually Adjustable Installation Position: Metal Plate for adjusting the mounting height is included in the package. It allows the laser head to move up and down  according  to your installation height requirements. Application: Suitable for customers and friends who are interested in cutting or carving. Carving wood, plastic, bamboo, etc. can reach a depth of 3 mm. Description of carving material: 1. Wood material, paper, plastic, leather, bamboo, bone teeth, pu, rubber, metal paint surface, etc. can be carved. Generally, materials that can be burned with fire can be carved; 2. Stainless steel can be engraved without surface-treated metal. 3. Copper, silver, aluminum, iron, etc. cannot be carved (if the surface is painted, it is ok). Cutting Range(80W): Within 15mm: paper/bookmark/leather/cloth sponge non-woven fabric. Wood chips within 15mm Black acrylic within 10mm Color thin plastic within 5mm (*Note: This is the best cutting thickness, not only this thickness). Cutting Range(40W): Within 10mm: paper/bookmark/leather/cloth sponge non-woven fabric. Wood chips within 10mm Black acrylic within 7mm Color thin plastic within 3mm (*Note: This is the best cutting thickness, not only this thickness). Specifications: Product Type: 80W combined light + built-in air pump / 40W combined light + built-in air pump (Optional) Length of Laser Head Connecting Cable: about 61cm. Input Power: 80W / 40W Output Power: 11W / 9W Wavelength: 450nm Voltage: 12V Service life: 20000h. Material: Aluminium alloy Item Size: 118 * 69 * 50 mm / 4.64 * 2.72 * 1.97 inch Item Weight: 360g / 12.7oz Package Size: 17.2 * 11.8 * 6 cm / 6.77 * 4.64 * 2.36 inch Package Weight: 516g / 18.2oz Package List: 1 * Laser Engraving Module 15 * Paper Card (for Engraving Test) 1 * Connection Cable 1 * Installation Backplane 1 * Lifting Plate 4 * Washer 1 * User Manual (English)