Series installation - digital - timer with quick fastening, text-oriented user guidance in the display, width 17.5 mm, 10 year power reserve and programmed summer/winter time changeover, daily and weekly program, DuoFix plug-in terminals, OBELISK interface for PC programming, 56 memory locations, shortest switching time 1 min., summer/winter time button, permanent switching ON / OFF / AUTO, switching preselection, 1 channel, 1 changeover contact 16A/250V~.