Unlike other models, there were block count differences between the LectronMW era and the Braun Grund- und Ausbausystem 1 S models. Why these changes were made by Mr. Walter is unclear.
In the LectronMW model, the ground block count was increased from 1 to 2. The diode block count was reduced from 4 to 2. The single test point blocks were reduced from 2 to 1. Finally, the lamp block count was reduced from 2 to 1.
This model included the Lehr-und Lernkartei (teaching and learning cards) Elektrik I and II documentation sets with 57 additional experiments supplemented with questions and detailed explanations. In this particular unit acquisition, a mix of A5 and A4 formats was provided.
Continuing the precedent, Mr. Walter used up the old Braun supplies before going to the expense of creating his own.