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Fire alarm and warning lights are the common tools for the fire scene. When the alarm rings victims run to emergency escape but don’t know where to go without indication.
Different colors of light can indicate people where to go according to the situation of fire scene. White light is for usual situation and it will turn to green light and red light when the fire occurs. Green light, indication light, can alert victims move to the right direction. Red light can alert victims who are in the dangerous floor and should evacuate rapidly.