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Helper in the dark / household

Helper in the dark

When the environment is dark enough,the light sensor is activated,if this time someone steps on the surface of it,the gravity sensor will also be activated,then the line is connected.
With helper in the dark weared,people need not worry be tripped by desk when getting up to the toilet in midnight,even they need not click the button as it will sense automatically.



hangzhou, China



hangzhou, China

He zhen yao