DTMF phone interface to access public address systems from any line or analog extension of telephone system. The audio output is configurable (-60, -20, 0, and +4 dB). Incorporates security paging relay, priority contact associated with the audio output and audio input level contro. Allows configuration of the ringtones before answering, password, hung tone detection time, communication time and activation of the noise gate. 230 V AC, consumption 20 mA. Weight 1.6 kg. Dimensions 213 x 44 x 235 mm. Finished in iron black RAL 9005, with black skinplate.