Provided are a node device of a beacon-enabled Wireless Personal Area Network managing a channel resource and a method thereof. The method includes depositing a co-polymer composition having a first component and a second component onto a substrate to form a stable film having a first thickness. The decorative cover enables the quick and easy customization of the speaker assembly. The bearing member is rubber and is connected to the fixing face by vulcanization. The assay utilizes a three-dimensional matrix or semi-solid media transfected with the subject compound, and enables live colony growth determination and imaging. After a channel protective layer is formed over an oxide semiconductor film containing In, Ga, and Zn, a film having n-type conductivity and a conductive film are formed, and a resist mask is formed over the conductive film.