Schneider Electric Merten surface-mounted housing MTN512319 is in color polar white with 3 gangs. And it is mercury free. As well as heavy metal free, taking care of the environment and your health all the time. Being made of polycarbonate material, this surface-mounted housing is quite reliable and resistant. This surface-mounted housing belongs to Artec, M-Smart aesthetic group. Besides it is halogen free halogen free, which is good for your health. In residential buildings, offices, schools or hotels, Merten System Design stands for inspiration, design and functionality in all living spaces. From controlling conventional installations to intuitive KNX technology, System Design offers all the functionality of a flexible modern switch range.