40amp Mystery Speed Controller with built in BEC

Current stock has a Black Cover not Yellow.

For 2S and 3S battery packs. 

I have been selling the 30A versions of these for quite a long time and have now got hold of the 40A versions.

These seem to be good quality with thick silicon leads.  I don't know much about them other than that the 30A ones can be flashed with the SimonK firmware so perhaps these can too?

They work without any programming for airplane use.  

Dimensions of the main body are:

Length: 72mm

Width: 27mm

Height: 12mm

Weight: 40g

They have a built is BEC which can power the receiver via the throttle channel.

Sent from the UK via Royal Mail, note some Chinese sellers claim to be in the UK but I actually am!