AZA-2EM AudioSet 2 participants AP 1+n stainless steel ESTA/HAT-402. Surface-mounted audio set as electronic package for intercom system/intercom in accordance with DIN EN 50486 1+n technology. Audio set consisting of indoor station (surface-mounted) and outdoor door station (surface-mounted), indoor station, door electronics, mains transformer and listening/misuse blocking module. Outdoor door station with 2 mm thick front panel made of matt brushed stainless steel with perforated intercom grille, loudspeaker, button strip, special screws, flush-mounted nameplate (changeable from the front) with LED lighting and housing depth 35 mm. Indoor station with call controller/call canceller, LED function display (speaking and door opening), door opener button and a potential-free button.