Disclosed is a medicament dispenser having a base unit and a replaceable refill container. The base unit has one or more sensors for sensing one or more conditions of the medicament dispenser and a display for displaying indicia representing a state of the medicament dispenser. First indicia show the base unit and second indicia show the refill container. The display of at least one of said first and said second indicia is selectively controllable independently of the display of the other of said first and said second indicia in order to indicate said one or more sensed conditions of the medicament dispenser.