I already had a radio transmitter InterTechno. That was only for 3 devices. But the radio outlets installed behind cabinets because I light this by Ferbedienung. In Möbelhandel a remote control would be much more expensive. Even a floor lamp is still integrated. Now I have bought an illuminated shelf. To this also had to operate by remote control an operation for 4 units ago. Thus only one remote control for all is necessary. Of course I did not want to break down the cabinets. And these have now gained an extension of me. Everything works with the already installed Funksteckdosen. That was the decisive factor for this purchase for me.