To be able to adjust the temperature or intensity of light in heating and air conditioning systems or electricity allows us to create the most suitable for each situation ambience. Controlling the environmental conditions in a stay always provides an added benefit for the well-being of our work or perform enjoy our leisure. For this purpose, we have the Cover for four-position rotary switch in grey colour of the Simon 75 series, grey, its easy installation and cleaning, a soft damp cloth is enough, making it one of the most demanded covers for 2-way switch. This four-position rotating piece, which has been manufactured from thermoplastic composite materials, includes the corresponding engraving for each one of them (0- I-II-III), being suitable both for surface-mounting and flush mounting, its price makes it number one compared to other similar products.