Automatic needle-free injector container unit system

An automatic needle-free injector container unit system comprising:

• a needle-free injector for injecting a medicament from a cartridge to a user, wherein the needle-free injector comprises a cartridge chamber for receiving the cartridge;
• an injector movement mechanism for automatically and reversibly positioning the needle-free injector to one or more of:
• a home position where injector is retracted and positioned away from contact with the user, and an injecting position where the injector is in proximity to the user for injection of the medicament;
• and
• a container for housing the needle-free injector and injector movement mechanism,
• wherein the needle-free injector comprises one or more sensors,
• wherein:
• a first sensor of said one or more sensors is a jaw lock sensor that detects whether a cartridge is locked into the cartridge chamber;
• and
• a second sensor of said one or more sensors is an air cylinder actuator sensor that detects when a cartridge has been inserted into the cartridge chamber.