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.本發明有關用於藥物輸送裝置的裝置,其沿著縱軸延伸,且包含被配置在其近側端之藥物輸送構件蓋子(18);其中該裝置包含輸送構件突出調整器(28),其可操作地連接至該藥物輸送構件蓋子(18)。本發明的特徵在於該裝置另包含信號產生機件(34),其可操作地連接至該輸送構件突出調整器(28),且被配置成提供聽得見及/或觸覺及/或視覺信號,而指示一穿透深度已被設定。18‧‧‧藥物輸送構件蓋子24‧‧‧螺紋26‧‧‧螺紋28‧‧‧管狀元件30‧‧‧標記34‧‧‧信號產生機件36‧‧‧凹部38‧‧‧突出部份40‧‧‧橋接件42‧‧‧切口