Digital KNX timer with annual and astro program, interface for OBELISK top2 memory card (PC programming), programming option also via KNX bus, time synchronization by connecting an optional external DCF antenna, DuoFix spring terminals for 2 conductors each, extensive annual clock functions with holiday database and automatic updating, pulse program, cycle program, switching preselection, permanent ON/OFF switching, expiration timer, integrated operating hours counter, holiday program, 2 random programs, display lighting (can be switched off), PIN coding, automatic summer/winter time switching, time and date synchronization of other bus participants