An electro-mechanical drug delivery device comprises a main body having a distal end and a proximal end. The distal end is configured to attach to a dispense interface. A separable housing that can prevent an administration of a drug by the drug delivery device, the housing configured to cover at least a portion of the distal end of the main body when the separable housing is coupled to the main body of the drug delivery device. A conduction element is provided by the main body and configured for establishing an electrical connection with an electrical connector. Establishment of the electrical connection is prevented when the housing does not cover at least a portion of the distal end of the main body. The electrical connection may be established when the housing covers at least a portion of the distal end of the main body of the drug delivery device.