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Watchman / Survival+Emergency


Warning signs can distinguish whether there’s someone close to the dangerous area of the waterside by an infrared sensor, followed by sending a voice alarm to warn the danger. When someone is in the dangerous area for too long, warning signs will send a whistle flash alarm to take attention of people around to avoid accidents.


Jiangsu University

Jiangsu University
ZhenJiang, China

Lei Sun,
Jiangsu University