Digital twilight switch/light control device with integrated timer, 1 channel, weekly program, separate surface-mounted light sensor (IP 55) included, DCF or GPS radio control with external antenna possible, 1-99,000 lx, external input, 3 special programs with annual function, width 2 HP, app programming possible, secure transmission via optional Bluetooth Low Energy OBELISK top3, maximum protection against manipulation, timer programs can only be transferred from the app to the clock if the Bluetooth OBELISK top3 is plugged into the clock, 600 watt LED power, 800 amps/200 s inrush current, low standby power, operating hour counter, pulse program, DuoFix plug-in terminals, power reserve and programmed summer/winter time change, OBELISK interface for PC programming