Yes, but it would be great if it was an additional UI on the 12 mode groups so people have a choice as to what they prefer. That would be the ideal driver I reckon.
Have 3 levels that are user configurable, I reckon that would be quite popular.
Some improvements can be made on the modes on the 12 group driver, but what i really wish for is battery check with 4 or 5 quick half clicks. I have 4 of these installed and always use group 5 no memory. Temperature step down should be able to be disabled or adjusted.
Ramping driver is quite nice for “tactical” use even with reverse switch. It can be improved with two way ramping and 4-5 click special mode access.
Temp cannot be adjusted when most of the drivers rely on the NTC. Temp can be disabled by removing it
I don’t know how certain it’s measure beam rebounce from wood color table but still quality emitter
the reflector of M21E and C8 are the same
yes
Cool. I’m gonna need one of each color and like 5 of those drivers for other AA sized lights I have sitting around.
Simon, do you run the “Dongguan Kangwoyi Electronic Co.,Ltd” store on Amazon US or is that a reseller? Thank you.
It’s my company.
The pronunciation of “Kangwoyi” in Chinese is similar to the English word “convoy”.
Hi Simon,
Curious and will be nice to know…
I thought Chinese name for Convoy is 毛裤？
毛裤 is my nickname
:+1: :+1: 
googling 毛裤 turns up some interesting images
Yup.
I'm seeing people wearing pants that look like very hairy legs. 
Hairy pants for the win!
Funtastic, some interesting UI suggestions! Definetly agree a review of the various modes would be nice.
I’ve just received a M21B GT FC 3000-3200K and S2+ sw30k, really loving the warm tints + hi cri.
Have been running the UI on the default mode with memory mode turned off. I find this very usable and I can get into battery check easily enough (after a short epileptic episode) which is a nice feature.
Nice! i just ordered the same M21c, my first GT FC40 light, and i ordered some sw30 bare leds as well on a "whim". I also ordered that AWESOME m21e in 4000k, but still am wondering if i shoud've went 3000k like my gut was telling me to do..
Haven’t been on in a couple weeks and randomly discovered these new lights in Simon’s store. Man, they look great! The T3 looks interesting, and the IR lights. Also saw that he was able to source the ring magnet for the T2 tail cap in a proper 4mm height, and they’re at a good price, too. I had to source some thinner 2mm from a store on ali and glue them together, and paid more than I wanted for ten of them. I messaged four vendors and none of them could source a thicker ring in that size…Simon’s got the connections! 
Simon and Convoy CONTINUES to have THE YEAR! all of the new releases (4x18 sbt90, 3x21a, L7, new gt fc40 variations, and sft40 variations!) are awesome so far, and then he comes out with the M21E!. so awesome. Very exciting for us Convoy and flashlight fans, Simon. Thank you!
What I’d love to see is the M21E, M21D etc use the SFT40. Yes, I know it would require a new driver, but currently Convoy have nothing for longer reach using a side switch, except the SBT90.2 models. Need something a wee bit more compact
M4U not suitable?