Actuator unit (10; 10') for generating haptic feedback at a human-machine interface, having at least: - a surface that is movable in the Z direction; - a pressure-measuring device for measuring a pressure in the Z direction on this movable surface; - a feedback component, which is designed to transmit haptic feedback to the movable surface in response to a pressure measured by the pressure-measuring device; - contacting means for connecting the actuator unit (10; 10') to a control unit, which is designed to receive and to evaluate pressure measurement values of the pressure-measuring device and to actuate the feedback component to generate haptic feedback if a determined pressure measurement value exceeds a limit value; characterized in that - the actuator unit (10; 10') has at least two housing parts (20; 21), as a result of which the actuator unit (10; 10') forms a stand-alone component, which can be installed into an electronic device as a functional component, and the two housing parts (20; 21) form a housing for the component; - a first housing part forms the movable surface by way of the first housing part being arranged movably in relation to a second housing part at least in the Z direction; - the pressure-measuring device is designed to measure a pressure in the Z direction on the movable housing part, wherein the pressure-measuring device is a capacitive measuring device which is arranged between the two housing parts (20; 21) in a manner spatially separated from the feedback component in order to cause a capacitive pressure measurement owing to the movable first housing part moving in relation to the second housing part in the Z direction. - a surface that is movable in the Z direction; - a pressure-measuring device for measuring a pressure in the Z direction on this movable surface; - a feedback component, which is designed to transmit haptic feedback to the movable surface in response to a pressure measured by the pressure-measuring device; - contacting means for connecting the actuator unit (10; 10') to a control unit, which is designed to receive and to evaluate pressure measurement values of the pressure-measuring device and to actuate the feedback component to generate haptic feedback if a determined pressure measurement value exceeds a limit value; characterized in that - the actuator unit (10; 10') has at least two housing parts (20; 21), as a result of which the actuator unit (10; 10') forms a stand-alone component, which can be installed into an electronic device as a functional component, and the two housing parts (20; 21) form a housing for the component; - a first housing part forms the movable surface by way of the first housing part being arranged movably in relation to a second housing part at least in the Z direction; - the pressure-measuring device is designed to measure a pressure in the Z direction on the movable housing part, wherein the pressure-measuring device is a capacitive measuring device which is arranged between the two housing parts (20; 21) in a manner spatially separated from the feedback component in order to cause a capacitive pressure measurement owing to the movable first housing part moving in relation to the second housing part in the Z direction.