A refrigerant heat pump system is operable in both heating and cooling modes. By fabricating analyzer components on a module and including with that module an identifier for that module, it is possible to uniquely associate a user or task with one or more modules. A correspondingly shaped holding bead in the upper flanging tool engages in this holding recess and form-tightly holds the tool and the flanged plate. When interference is detected, a higher bandwidth Basic Service Set may be relocated to an alternate channel, or may have its bandwidth reduced to avoid interference. The digital camera also includes a second image display mounted to the camera body and deployable to at least one viewing position in which the first and second image displays provide a combined display area.