Automatically switches light 'ON' and 'OFF'. Saving no end of energy. Did I turn the light 'OFF'? Or did I forget to? With the NightMatic 3000 Vario, this question's not an issue any more. When it's dark it takes care of switching the outside light 'ON' and 'OFF' all by itself. But that's not all: The intelligent night-economy mode automatically switches the light 'OFF' after a programmable time and back 'ON' again in the early hours between 4 and 5 o'clock. The photo-cell controller feels most at home on your property, on the front of a building or in a shop window.