In addition to the usual Gira switches, rocker switches and rocker buttons are also available with large tactile symbols for the light, bell and door. They make life easier for blind people, or people with impaired eyesight. An acoustic element can also be used.
Then switching on the light can be heard clearly, in addition to the door bell and opening the door. In contrast, when the light is switched off, no acoustic signal is issued. This means that you can tell whether you are switching the light on or off.