450nm 20W/30W/40W Engraving Laser Module 3D Printer DIY Cutting & Marking. Wavelength: 450N (+-8NM) PWM TTL modulation signal: 0-5V, frequency. This product is equipped with one 3-to-2 2PIN cable, one 3PIN cable, and one power cable for connecting DC to 3PIN. The red and black wires are used for connecting to 12V or 24V power sources, with the red wire connected to the positive pole of the power source and the black wire connected to the negative pole; The yellow and white wires are used to connect 0-5V PWM or TTL signals, with the yellow wire connected to the positive pole of the signal and the white wire connected to the negative pole of the signal.
When connecting your device, please be careful not to connect the wires backwards or incorrectly, otherwise the laser will not light up and only the fan will rotate. In addition, the DC to 3PIN power connection cable can be connected to the DC male adapter of 5521 or 5525, directly connected to the socket for use! This laser can carve wood, bamboo, non transparent acrylic, bones, colored plastic, etc. It is not allowed to carve transparent, reflective, or mirror materials or metals. 1PC 450nm engraving Laser Module.