2.1.2. The installation with remote-controlled switches

Already a number of decades ago, the remote-controlled switch was introduced to the installer. It centralised the switching of clients in the fuse cupboard, in contrast to ordinary traditional switches that are installed decentrally around the home. The cabling to the clients is in star formation, as is the cabling to the operating buttons. They send impulses to the remote-controlled switch when it has to switch over. In practice, this form of installation is used far too little. It nevertheless has unmistakable benefits with regard to the flexibility of an installation. Pushbuttons can be added to existing operating points without having to install additional cabling. A number of pushbuttons can be connected in parallel with one remote-controlled switch or client. In certain cases group control and central control can be done. The safety of the installation is also increased by using remote-controlled switches that operate on a very low voltage (24V).

Example of a quadruple remote-controlled switch where every remote-controlled switch can be controlled separately, in a group or centrally using pushbuttons. (Illustration source: Eltako)

Structure of the remote-controlled switch installation. By having a few reserve cables to the pushbuttons, it is always possible to install a pushbutton later without having to install new cabling. (Illustration source: Modulelec)

In the above example we can see that somewhat more cable will probably have to be installed, but the installation of it is easier. The grinding and cutting from the operating point to the ceiling, and the drilling into the ceiling is eliminated. All cables to the clients (lights) run over the floor plate. This facilitates and accelerates the installation work.