Design: Large exclusive hand-held case. With recessed area e.g. for membrane keyboards, control elements. Battery compartment accessible from the outside with locked battery compartment lid. For 2 x 9 V flat batteries (PP3) or 4 x 1.5 V mignon cells (AA). Cut-out section for digital and analogical modules. Raised front area to accommodate plugs.
Version I: with battery compartment.
Supply: top and base part, battery compartment lid, assembly kit.