Here, it is not 'electronics' in a general, fairly abstract sense, tazlking about 'electronics technology' in th widest sense — "the electronics of modern telecommunication", but rather, in the specific sense of "the electronics (circuitry, etc.) that handle xyz" — to make this distinction clearer, I'd suggest using the 'xyz' as a qualifier; as in, for example "the engine management electronics".

Note that sometimes « l'électronique » really cries out to be translated as 'the electronic unit/module/package/assembly/etc.' — however, I don't feel that is necessary in your particular context, which sounds a bit like a patent, and is of course talking in more general, theoretical terms.