In a movie theater, steps in the aisles are usually marked with a row of small lights for convenience and safety, when the film has started and the other lights are off. Traditionally made up of small low wattage, low voltage lamps in a track or translucent tube, these are rapidly being replaced with LED based versions.
প্রেক্ষাগৃহে কি কম ওয়াটযুক্ত বাতি প্রতিস্থাপন করা হচ্ছে?
LED based versions