Video set Siedle Basic in bus technology with the functions calling, speech, viewing and door release. Number of integrated call buttons: 1. Each Basic set can be extended to include selected door and indoor stations, as well as switching functions and a telephony connection. Scope of delivery: Video door station Siedle Compact (brushed stainless steel): 1. Video indoor stations Siedle Basic: 1. Set power supply unit: 1. Performance features Door station CV 850-...-02. Integrated camera with automatic day/night switching, LED lighting and 2-stage heating. Integrated door loudspeaker. Voice volume adjustable. Number of integrated call buttons: 1 (CV 850-1-02), 2 (CV 850-2-02). Acoustic key acknowledgement can be activated. Backlit nameplates can be changed at the front. For surface mounting with brushed stainless steel trim.