for the AS and A series
for audio module and as an extension module for a universal button module.
Complete with 3-way button set (Article No.: .. 503 TSA ..)
Product features
5 LEDs for display (e.g. door open) without additional wiring
Display of operational readiness via an LED
Optical call display by flashing LED on the talk button
Labeling field
Including labeling foils with symbols for audio and video
Including audio connection cable (red, 220 mm)