R1100GS black box

[Seamaster]

Hello all,
Any suggestions as to what this is and what it does.
Situated under the tool box RHS.
Thanks

 

[Wrigsby1]

It's the CO potentiometer fitted to R1100 UK bikes instead of a Cat and Lambda sensor... Adjusts the CO output and if the bikes running fine is best re cable tied back where it was and left...

 

[Seamaster]

It's the CO potentiometer fitted to R1100 UK bikes instead of a Cat and Lambda sensor... Adjusts the CO output and if the bikes running fine is best re cable tied back where it was and left...

Thank you, I resisted the temptation to twiddle the screw - which is unusual for me.