Trigger switch for actuating a gear on a bicycle

Trigger switch for actuating a gear on a bicycle, comprising a switch housing, a cable storage device for winding up a cable for the actuation of individual gear stages of the transmission, a clamping lever and a release lever, wherein the tensioning lever on the switch housing is rotatable for shifting individual gear stages in the transmission in a Seilaufwickeldrehrichtung while in a cable releasing rotary direction by operating the release lever in each case at least one gear stage is switchable, characterized in that the positions of the clamping lever (2) and the release lever (4) to one another and relative to a handle portion (27) on the handlebar (8) of the bicycle adjustable are.