An electrical information device and a medicament delivery device are presented. The electrical information device includes at least one start of delivery sensor configured to detect a distal axial movement of a release member of the medicament delivery device. The release member is configured to be distally moved when an activator member of the medicament delivery device 1 is forced distally. The electrical information device also includes at least one information communication unit, which is configured to communicate information related to the medicament delivery. The electrical information device further includes at least one activation unit, which is configured to activate the at least one information communication unit based on a detected distal axial movement of the release member.