Wireless solutions

If you don't build nor reconstruct and want to have done an intelligent living, the wireless system is prepared for you. All the devices, switches, controllers, lighting devices, etc. have a transmitter resp. receiver built-in. There are also self-sticking switches and controllers which you simply put on wall. These devices are fed from electrical network or battery. Durability of batteries is usually 3 years.
Whole home, building or garden you can control as well by remote control, up to 150m distance. Communication is done on 868 MHz frequency.