the present invention relates to a device for a medicament delivery device, which extends along a longitudinal axis and comprises a medicament delivery member cover (18) arranged at a proximal end thereof； wherein the device comprises a delivery member protruding adjuster (28) operably connected to said medicament delivery member cover (18). The invention is characterised in that the device further comprises a signal generating mechanism (34) operably connected to said delivery member protruding adjuster (28) and arranged to provide an audible and/or tactile and/or visual signal indicating that a certain penetration depth has been set.
