Genuine Brembo Clutch Master Cylinder Lever Microswitch Micro Switch. 

Micro Switch from Brembo for different semiradial clutch master cylinders.

Fits for example for PR 15 like 10810131, mounted on different models Ducati, Aprilia, Benelli etc.

Mark on the switch: Marquardt 1022

It will NOT work for BRAKE master cylinder.