Features High Engraving Performance: 10W optical power output, the minimum focal length of this module can reach 0.04mm, the engraving speed can reach 20000mm/min, and the maximum cutting thickness can reach 20mm. This laser module is compatible with NEJE Master 2 machines. It is also compatible with most laser engraving machines, 3D printers, and CNC milling machines on the market, perfectly compatible. Focal Length Adjustment: The focal length of this module is adjustable, and it can be adjusted to about 33mm to obtain a focal length of 0.04mm. It is suitable for engraving stainless steel or black aluminum oxide, etc. Good Heat Dissipation: This engraving machine module is intelligently controlled by temperature sensor, equipped with a 10000 RPM 40mm cooling fan, with good heat dissipation. Applicable Materials: The module can directly engrave ceramics, MDF, coated glass, black acrylic, plywood, brushed stainless steel, stone, bamboo, leather, rubber, alumina and other materials, reflective materials need to be painted with black paint on the module, it can also cut wood and acrylic, depending on the wattage. Tip: Please do not use without goggles. Do not use around flammable objects, please be careful not to damage other objects around. Smoke will be produced when burning, please pay attention to indoor smoke exhaust. Please wear laser goggles during use to avoid direct contact with eyes and skin. Do not engrave mirror objects, pay attention to fire prevention, and pay attention to pets when working. Specification: Item Type: Laser Engraving Module Heat Sink Material: Aluminum Alloy and Brass Shell Model: A40640 Luminous Colour: Blue Section Size: Approx.40x40mm/1.6x1.6in Cooling Method: Temperature Sensor Intelligent Control, 10000 RPM 40mm cooling fan Product Size: Approx.85x50x40mm/3.3x2.0x1.6in Engravable Material: MDF, Balsa, Paper, Wood, Fabric, Plastic, Leather, Plywood, Foam, Anodized Aluminum Technical Parameter: Optical Power Output: 10W Wavelength: 445-450nm Beam Shape: Dot (Focusable) Working Voltage: DC 12V TTL and PWM Modulation: Support, compatible with TTL and PWM modulation Input Voltage: DC12V 3-4A PWM TTL Input: DC3.3-12V Input Interface: PH2.0, 4Pin (+,-, PWM TTL, Temperature), 3Pin (+,-, PWM TTL) , 2Pin and 2Pin (+,-) and (PWM TTL,-) Note: The temperature interface can be disconnected Drive Mode: External ACC Safe Temperature Range: <60℃ Digital PWM Wave Pulse Signal Generator Adjustment Frequency Duty Cycle for NEJE Laser Module Tester Board Specifications Power Input: DC 12V Output: PH2.0 4pin (12V, GND, PWM TTL, temperature) Modes: 3 Modes (Off, Manual PWM, PWM TTl in) Temperature Display: Yes PWM Display: Yes Manual PWM Control: Yes Package List: 1 x Laser Engraving Module 1 x Sliding Slot 1 x Air Assist Kit 1 x Trachea 1 x Tracheal Adapter 2 x Washer 3 x Wire 1 x Digital PWM Wave Pulse Signal Generator Adjustment Board 1 x Interface Adapter Board 2 x Hex Wrench 1 x User Manual 5 x Screw Package List 1 x Laser Engraving Module 1 x Sliding Slot 1 x Air Assist Kit 1 x Trachea 1 x Tracheal Adapter 2 x Washer 3 x Wire 1 x Digital PWM Wave Pulse Signal Generator Adjustment Board 1 x Interface Adapter Board 2 x Hex Wrench 1 x User Manual 5 x Screw