@fermintm,
Went to your build thread. Nice one. I have the DX 200mw module. They look virtually identical. My brass housing unscrews in the middle exposing a coated lens, it has the same 33ohm resistor, but the switch button is red and it does have a diff part no. on the sticker.
It doesnt really get hardly warm either, but the beam is way more than my 25-30mw overspec penstyles......I was just surprised they were so close in looks. I can post a pic, but would probably be more appropriate in your thread, just as a comparison thing. The 33ohm is right off the power lead so it seems its limiting the driver.
Just a curious observation.................