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.