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Size:33×33×120mm 40WTechnical Parameters Shell size: 33×33×120mm Shell material: aviation aluminum Module center material: copper Color: Oxygen silver Power control: PWM TTL (signal control voltage 0-5V) Light shape: point-like fixed focus (the focal length with the engraved object is 2.5mm) Interface specifications: 3pin 2.54 /4pin 2.54 Power supply current: 4A (constant current) Laser wavelength: 450nm Working current: 40W Focus power: 25W Power supply voltage: 12V (requires power adapter 12V 5A) Optical lens material: efficient light transmittance Laser light source: semiconductor blue light Working life: 18000-20000 hours Heat dissipation method: high-speed double ball fan cooling at 13,000 revolutions per minute, safer and more durable. Packing list: laser module × 1, protective glasses × 1, 4P line × 1, 3P line × 1, short line DC × 1, focus rod × 1 Can be carved: wood, stainless steel, oxidized metal, fabric, plastic, MDF, PCB, paper, bamboo, horns, leather, balsam, rubber, foam paper, sponge paper, etc. No engraving: metal raw materials. Cutting material: cutting plywood, cutting black acrylic board, leather, paper, etc. Applicable to: CNC3018 3018PRO 6550 5040 1810 Purchase instructions, please check if your engraving motherboard matches the laser head connection port, if you don’t understand, you can take a picture and send it to us If you need to replace the wires, please pay attention to the wire sequence: 3P wire connection mode, red wire 12V+, black wire GND -, yellow wire pwm+, 4P line link mode, red line 12V+, black line 12V-, yellow line TTL+, white line TTL- Note: When the laser is working, please do not touch any part of your body with the laser module