An electrical information device configured to communicate information related to a medicament delivery performed by a medicament delivery device is presented. The device includes at least one information communication unit configured to communicate the information, and at least one power providing arrangement including at least one power source, at least one electrical switch and at least one switch lock member. The at least one switch lock member being configured to be movable in an axial direction from a first position to a second position by an axial movement of at least one triggering member of the medicament delivery device, to cause a change of state of the at least one electrical switch in the second position, thereby providing electrical power to the at least one information communication unit from the at least one power source, and to be locked in the second position, such that the change of state of the electrical switch is maintained.
