1. Designed for NEJE laser engraving machine, other laser cutting, 3D printer, Arduino, and CNC equipment.
2. 3.3-12V TTL adjustable power.
3. Wide application, 3 input interface designs, DC12V+TTL, 3Pin 2.54 interface, 3pin connection port.
4. 7.5W optical power output, can be directly upgraded on the basis of NEJE Master2 20W, if it is 7W and 3500mw customers need
to replace the 12V3A power adapter.
5. Fixed focus design, you only need to pad a 6mm spacer on the bottom and lock the screw to adjust the focus.
6. 30mm size, does not affect the engraving area of ​​NEJE Master2.
7. vision protection.
8. Modified laser air assist.
9. Intelligent drive, able to detect temperature and dynamically adjust the fan speed, making it quieter when not in use.
10. 15000 rpm double ball high-speed fan, stronger heat dissipation performance
11. 60mm built-in threaded copper core, add heat dissipation silicone grease, safe temperature control, NEJE 48-hour aging test.
12. 2 years warranty, free replacement.

List：
* 1 x40W laser module
* 1 x sliding card slot
* 1 x L wrench
* 1 x L-shaped small wrench
* 1 x interface adapter board
* 1 x 4pin laser line
* 1 x 3pin 2.54 interface output cable
* 1 x 2pin TTL control line