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Notification lights for hearing-impaired people are used only as notification lights, and there is no power function, so they must be notified when they sleep or when they do not want to be contacted separately. Unlike ordinary people, they should not be completely obstructive when they respond easily to small external elements and take a rest. Using a smartphone, the user's notification time can be adjusted after interlocking, and if you don't want to receive a notification for a while, you can easily adjust it by touching the top.
Seoul, South Korea
Byun Geon U,