Free-control is the wireless system from the manufacturer Kopp for controlling and securing in homes and apartments. Its applications include wirelessly switching and dimming lights, controlling roller shutters and awnings, as well as other comfort applications. The use of the Free-control wireless system from Kopp is ideal in situations where retrofitting and expanding existing installations is not possible. A unique feature of the wireless technology used is that a receiver can be controlled by an unlimited number of wireless switches, such as remote controls, wireless light switches, or various sensors. This opens up further interesting application areas. The system can also be expanded into a smart home system with an appropriate gateway, and the wireless sockets or receivers can be controlled via an app on a smartphone or tablet.