2Wire audio/video electronic unit, with wide-angle color camera and teleloop for hearing aids, echo suppression function, automatic sound balancing, automatic loudspeaker level control, automatic microphone level control, 4 call buttons backlit with white LEDs with photocell lighting control, call status indicator LED.

1 input configurable as external button for CA door opener or PA door open, 1 direct opening output for electric lock, to be completed with front modules and single, double buttons or blank modules