I was given another suggestion:
Twist to OFF so that there’s about a quarter turn required to twist ON.
Press the head of the light like a ON button eight times and hold on the eighth press.
Each press should cause the light to switch ON. And it should power off and change modes when holding down for the eighth press.
This seems much easier than twisting.
Yeah 
It was attracted to one of the LED bulb ceiling lights in the living room. I opened a door to the backyard a few metres away from the wasp and switched on the external lights. I then walked across the room and switched off the living room lights.
The wasp stopped bumping into the LED light and everything went silent. I used the C01R to find my way back to the door. The wasp had dropped to the ground and was walking around near the door. After a few minutes it finally crossed the threshold of the door. I slammed the fly screen door shut…. and then I spent another 5 minutes waiting for it to make it’s way further into the backyard so that I could open the fly screen door and close the actual door.
My wife reminded me that insects are attracted to light and I should probably stop shining the red light at the wasp.
Mostly they are attracted to the blue light component of ‘white’ LED/fluorescent light. You should be OK with the red light.
RE: TIR Lenses
These removed out of the holders seem to be a match to stock C01S and I think they might be also what Clemence used for his special Jet-u run Nichia.
I wouldn’t bother with any of the narrow ones if the stock one isn’t what you want.
I just put some DC-Fix on mine and it is close enough. Smooth with plenty of spread. Low could be a little lower but I have no complaints. It will work nicely in preserving night vision with the telescope. Hi is very bright. Don’t see myself using it at all.
My little red beauty finally arrived. Apart from the pre-sale time, it went like this.
July 04th: picked up by shipper
July 05th: processed by shipper
July 06th: on plane
July 10th: arrival Luxemburg
July 20th: departure from Luxemburg
July 21st: arrival The Hague
July 22nd: arrival Amsterdam
August 06th: my place, 32miles from A’dam.
I guess the last 15 days were spend on back of an Über slug.
More than 2 months since ordering, from which actually 8 days on the move.
But all’s well that end’s well. And I like it, at lot.
anybody with a light meter, what are the lumen outputs?
got my lights today. works great but im having a very hard time to attach the mettalic keychain to the light 
wish they did this from the factory…. so far no luck…… maybe imstupid….
ah i got it too work after a bit of patience 
time to retire my astrolux a01 light now… so will have the sofirn and the olight uv keylight fun combo. Really great sofirn looks good on turbo.
News Flash:
C01R stock is slowly running out. I'm not sure if that means including or excluding the stock they want to sell via Amazon DE/US. However, there might be a chance for a second batch of C01R. Now, Barry and I have been thinking whether Sofirn should use XP-E2 photo red again or move on to SST20-DR. I said it's probably worth trying the latter one as the optic seems to fit really nice to the die/dome size of SST20 emitters, see the beam quality of C01S using SST20 4.000K 95CRI. Eventually, chances look not too bad that we may see less artifacts in the hotspot by using the slightly bigger LED. Moreover, they could try to push C01R even a bit more to its very limits - in both directions. That means more power (and heat for sure :-D ) on high mode but also less power and less brightness in the low mode for even better preservation of your night vision. We could name it C01R reloaded or C01R V2...whatever.
Sofirn is also looking for alternative TIR lenses (as an accessory for instance) to enable each customer choosing his/her favorite beam profile. As many of you stated, a floody wide angle beam lens would be the icing of the cake.
10440? :sunglasses:
They need to tool up for some other metals!
Got them. They are perfectly acceptable on low. Still going to put a 45 degree optic on it to make it dimmer. It really is hard to judge monochromatic lights based on pictures or numbers.
If we have a chance for a lower low and a higher high…any chance we could get far red (720 nm)? 
A far red LED would not be able to make a useful amount of light. Probably 1 lumen or less.
SST-10-FR is 730nm. Human eye is about 117x less sensitive to 730nm compared to 660nm. Not sure what LEDs are available at 720nm, but eye sensitivity isn’t much better at 720nm compared to 730nm.
I‘m just checking with Sofirn if it’s feasible, reasonable and cost-effective to revive C01 using a 5mm EPIGAP EOLD-670-524 LED with 670nm.
https://www.epigap-optronic.de/tl_files/frontend/epigap/Datenblaetter/LED%20VIS/EOLD-670-524.pdf
However, costs could be insane for a small batch of these lights. Maybe I should contact them to get a quotation. :-D
No way, sorry.
I could imagine they have a plan like this in the drawer but materials like copper, titanium or brass are rather expensive and require different tools for machining. I wouldn‘t mind to see a nice C01S in mokume gane for $ 80.00 :-D
I made some suggestions to Sofirn to lower the low mode for better preservation of the night vision and to reduce brightness on medium mode as Djozz mentioned before as it is too close to high mode. I also suggested trying to raise the current on high mode a bit more as SST20-DR can sustain higher currents than XP-E2 photo red. Not too much of course for a small light like C01R but maybe it’s worth trying. ;-)
Far Red is probably not worth it as most people will barely see any light coming out of the front. I suppose the reasonable limit is 690nm (for medical/scientific purposes like here https://budgetlightforum.com/t/-/62550).
I’m in for longer wavelengths if price is right. Else I would say a different optics and a lower low would be a huge step forward. But bear in mind that the floody option significantly reduces brightness already. We’re not talking about low reduced by a magnitude.
Concerning longer wavelengths:
IMHO, it's quite a risk for a manufacturer to start a series production of these exotic flashlights, even if their MPQ is 250 pcs only. The smaller the MPQ is, the higher costs per unit eventually get, which again leads to less margin in selling for a reasonable price to the customer. If we now pursue to get a C01R with 730nm, chances are big that many customers will feel screwed after buying and using the light as there's barely any light to see even on high mode. A light like this could be useful for medical or scientific purposes for sure but that's a whole different category. I have no reliable, scientifically proven source right now but word of mouth is that high radiation not only of short wavelengths (x-ray, UV-C, UV-B, UV-A and even blue light) but also of long wavelengths (far red - infrared) can be harmful to the human eye.
Concerning some tweaks in C01R:
I didn't want Sofirn to reduce brightness settings by a magnitude but some gentle reductions to improve mode spacing. A lower low might end up in a great firefly mode using the "honeycomb" optic or anything more frosty/hazy/milky...whatever. :-)
