A cardiac rhythm management device includes a dual chamber pacemaker, especially designed for treating congestive heart failure by pacing a plurality of sites. An adapter configured to receive the connector and align the connector with the optical transmission element, such that the optical transmission element is spaced apart from the connector at a predetermined distance and is in optical communication with the connector for propagating light energy through the adapter and along the stub optical fiber to a termination area of the connector. The gateway server transmits a display of a list of options to the photographer. The invention also discloses an electronic device using the battery cover latch mechanism. Each coupling means of the coupling piece engaging a connector wafer is offset from an adjacent coupling means engaging an adjacent connector wafer to provide offset columns of contact elements. Next, the navigation system determines whether the vehicle is within a predetermined range from the map address stored in a memory of the navigation system.