A uniphone is characterized by a wide base, thanks to which it can be installed in place of the older models. Uniphone has a button enabling user to control a door release. The button is illuminated by a LED diode that indicates uniphone calling. Another button allows for controlling an additional device, eg. a gate-drive or staircase lighting. It can operate in one of two modes: at any time or only when the uniphone is activated (after the calling). It is possible to install button module that enables to control another additional device..