Siedle compact audio door station, designed for installation in the In-Home bus or as a replacement device in the Siedle Basic audio set. It features calling, speech, and door release functions. Performance features include an integrated door loudspeaker, adjustable voice volume, and four integrated call buttons. Acoustic button acknowledgment can be activated. The backlit name plates can be changed from the front, and there is a backlit information sign for house numbers, logos, opening times, etc., suitable for surface mounting with a brushed stainless steel cover.