The Theben LUNA 121 Top3 RC is a single channel and single input digital, DIN rail, time and light control twilight switch or light controller with integrated time switch with weekly programme. The external light sensor included in the scope of supply. The input is external and has time synchronisation option via connection. The switching brightness is digitally adjustable. Zero cross-switching for relay-saving switching and high lamp loads
Up to 4 number of sensors can be attached
Up to 10 number of devices can be connected to a digital sensor