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The design aims at improving the ordinary emergency alarm lighting by adding the evacuate direction arrow projection. The long distance focal lens sets up for free adjusting to fit building structure and projects arrow shape of exit hint light to the emergency alarm, people can read clearly where to evacuate and get no panic.
Hence, the adding lens can also function as a surveillance videotaping for long distance images except in emergency situation. An additional function to the beeping alarm system is the voicing:Emergency, Evacuate Carefully! Most intriguingly, the modeling shape is lovely with cartoon character.
China University of Technology