TR 644 top2 RC Theben Digital DIN Rail Time Switch 110 → 240 V ac, 4-Channel

TR Series Yearly Timeswitches_x000D_ The TR series are a range of digital time switches from Theben / Timeguard which feature a large variety of functionality including yearly and astronomical programs, automatic summer / winter time changeover, Interface for OBELISK top2 memory card (PC programming), up to 800 memory locations and a 10 year power reserve (via a lithium battery). There are both single and quad channel versions available from Theben / Timeguard with up to 16 A resistive load switching capabilities._x000D_ Digital time switch with yearly and astronomical time program functions_x000D_ Connectable sensors (external selector switch, sequence timer)_x000D_ Connectable switches (ON or OFF permanent switching)_x000D_ DuoFix spring terminals_x000D_ Wire diameter: 0.5 → 2.5 mm²_x000D_ Button for releasing plug-in connection_x000D_ Text-oriented user guidance in display_x000D_ Up to 800 memory locations available_x000D_ Interface for OBELISK top2 memory card (PC programming)_x000D_ 10 year power reserve (lithium battery)_x000D_ Automatic summer/winter time changeover_x000D_ Pulse program and cycle program_x000D_ Extensive yearly clock functions_x000D_ Basic weekly program and 14 different weekly programs with priority levels and date ranges_x000D_ Permanent ON / permanent OFF with highest priority via date range program option_x000D_ Fixed and variable public holidays, public holidays dependent on Easter, day and date ranges with serial pattern_x000D_ Astronomical time switch function (automatic calculation of sunrise and sunset times for the whole year)_x000D_ Offset availble for adjusting of sunrise and sunset times_x000D_ Integrated count down timer_x000D_ Integrated operating hour counter functionality_x000D_ Display back light (can be turned off if not desired)