The present invention relates to a medicament delivery comprising a housing (10 100), which housing (10 100) is arranged to accommodate a medicament container (18 108), a drive mechanism (34 116) capable of, upon activation, act on said medicament container (18 108), a communication unit (60 160) arranged in said housing (10 100), a switch (58 144) operably connectable to said drive mechanism (34 116) and connected to said communication unit (60 160) for activating said communication unit (60 160) when operated, wherein said switch (58 144) is operated by said drive mechanism (34 116) at the end of a dose delivery sequence.