Additional elements
AC power supply placed in the cover with a signal diode - operation indicator.
details add to briefcaseKeyboard module KDC2003. It enables choosing a premise number.
details add to briefcaseAdapter for people with a hearing impariment DS.-255 The device allows to change the acoustic signal of the uniphone call into the pulse bulb lighting up to 60 W / 230 V.
details add to briefcase