The collection comprises a development series of models and realized microphones from Tesla Valasske Mezirici (Czech Republic) designed by Frantisek Crhak from the early 50s to the late 80s. He collaborated with prof. Z.Kovar from the School of Applied Arts in Gottwaldov. The collection also contains several models and realized telephone sets for Tesla Liptovsky Hradok and Tesla Stropkov from the 50s-70s. The collection of illumination bodies, mainly lamps from the period of functionalism, is followed by a series of metal lamps from Napako Praha from the 50s-70s. The period of the 80s and 90s is represented by examples of Italdesign from the production of the firms Italiana Luce, Artemide and Alessi.