A medicament delivery device comprising: a housing, and an activation assembly for a medicament delivery device, wherein the activation assembly comprises: a delivery member cover provided with legs (5a, 5b) and configured to be biased in a proximal direction, a movable sleeve configured to be received between the legs (5a, 5b), and wherein the delivery member cover is configured to be moved in an axial direction between a first position relative to the movable sleeve and a second position relative to the movable sleeve, wherein the movable sleeve is rotatable relative to the delivery member cover, and linear movement of the delivery member cover from the first position to the second position causes rotation of the movable sleeve, wherein the first movable sleeve position is a first rotational position and the second movable sleeve position is a second rotational position, wherein the delivery member cover has a distal end surface, defining a respective end of the first leg and the second leg, configured to cooperate with a radially extending portion of the movable sleeve, forming a cam surface, wherein cooperation between the distal end surface and the radially extending surface causes the rotation of the movable sleeve, characterized in that the activation assembly further comprises an activation sleeve configured to be biased in the proximal direction, wherein the delivery member cover is configured to axially displace the activation sleeve in a distal direction when the delivery member cover is moved towards the second position, wherein the activation sleeve has proximally extending arms configured to be axially aligned with and to cooperate with a respective leg (5a, 5b) of the delivery member cover, the delivery member cover thereby pushing the activation sleeve when moved from the first position to the second position causing the axial displacement of the activation sleeve, the activation sleeve being configured to thereby provide a first actuation of a sensor of an electronics assembly of the medicament delivery device, wherein the activation sleeve has a distally extending arm configured to actuate the sensor; wherein the activation sleeve is configured to move in the proximal direction when the delivery member cover returns from the second position to the first position, thereby providing a second actuation of the sensor, and wherein the movable sleeve is configured to prevent the delivery member cover from moving from the first position to the second position when the delivery member cover has returned from the second position to the first position. a delivery member cover provided with legs (5a, 5b) and configured to be biased in a proximal direction, a movable sleeve configured to be received between the legs (5a, 5b), and wherein the delivery member cover is configured to be moved in an axial direction between a first position relative to the movable sleeve and a second position relative to the movable sleeve, wherein the movable sleeve is rotatable relative to the delivery member cover, and linear movement of the delivery member cover from the first position to the second position causes rotation of the movable sleeve, wherein the first movable sleeve position is a first rotational position and the second movable sleeve position is a second rotational position, wherein the delivery member cover has a distal end surface, defining a respective end of the first leg and the second leg, configured to cooperate with a radially extending portion of the movable sleeve, forming a cam surface, wherein cooperation between the distal end surface and the radially extending surface causes the rotation of the movable sleeve, characterized in that the activation assembly further comprises an activation sleeve configured to be biased in the proximal direction, wherein the delivery member cover is configured to axially displace the activation sleeve in a distal direction when the delivery member cover is moved towards the second position, wherein the activation sleeve has proximally extending arms configured to be axially aligned with and to cooperate with a respective leg (5a, 5b) of the delivery member cover, the delivery member cover thereby pushing the activation sleeve when moved from the first position to the second position causing the axial displacement of the activation sleeve, the activation sleeve being configured to thereby provide a first actuation of a sensor of an electronics assembly of the medicament delivery device, wherein the activation sleeve has a distally extending arm configured to actuate the sensor; wherein the activation sleeve is configured to move in the proximal direction when the delivery member cover returns from the second position to the first position, thereby providing a second actuation of the sensor, and wherein the movable sleeve is configured to prevent the delivery member cover from moving from the first position to the second position when the delivery member cover has returned from the second position to the first position.