DIGITAL TIMER SEL 172 TOP3 ASTRO, 2-ch 16A

Astro timer with weekly program, 2 channels, 84 memory locations, Channel 1 or Channel 2 can also be used solely as a time switch channel, 3 special programs per channel with date function, Fixed free days or date ranges and Easter-related holidays, Astro times with additional night cuts / fixed ON switching, Constant ON or OFF switching, Downward counting timer, 2 external inputs, Buttons can be connected (external switch preselection, downward counting timer, staircase lighting function), Switch can be connected (constant ON/OFF operation, Astro or special program), Astronomical switching function (automatic calculation of sunrise and sunset times for the entire year), Correction for adjusting sunrise and sunset times, Location data can be programmed using coordinates or city lists of countries, Fixed ON/OFF switches programmable (e.g., night cuts), Switching time simulation (calculated Astro times and programmed ON/OFF switches), Astro mode switchable (evening ON / morning OFF or evening OFF / morning ON) or can be completely disabled, DuoFix spring terminals, 2-wire, Single-core or multi-core (with or without wire end ferrules), Wire diameter: 0.5 - 2.5 mm², Plug-in connector release button, Text-based user guidance on display, Date and time preset, All functions available without network connection, Connection to OBELISK top2 memory card (PC programming), Second switching program from memory card, Program copying, Program backup, 10-year backup (lithium battery), Zero-crossing switching for relay protection and high lamp loads (not for 24 V devices), Calculated Astro switching times, Programmable ON/OFF switching times, Switch preselection, Constant ON/OFF operation, Built-in operating hour counter, Reset capability, Maintenance function for monitoring maintenance intervals, Holiday program, Display backlight (can be turned off), PIN coding, Automatic summer and winter time change, Can be disabled, Switching rules for Europe, USA, and other countries already stored, Custom switching rules or switching based on fixed dates selectable This product description is an automated translation of the original Finnish description.