Hoardings are one of the most common visual appeal means on the streets during night time. They are illuminated from the front and the lighting load ranges from 150 watt to 20 kW depending on the size of the bill board. Generally the hoardings are switched ON at dusk and switched OFF during late night. The energy saving potential is substantial if the part night operation is adopted as said above. For example a hoarding with a load of 10 kW will consume 10 units of electrical energy for every one hour and so if the energy is saved from mid night to early morning the saving will be 60 units per night or 1800 units per month.. A device for automatic late night switching OFF will reduce the energy consumption by up to even 50% for the selected duration.