The invention relates to a method and device for the determination of the gas permeability of a container, for example, a PET bottle. A pair of right and left cage-side sheaves are disposed in the upper space of the cage, and the rotational axes of the traction sheave and the cage-side sheaves are extended in the longitudinal direction. The methods include contacting a 4-substituted-6,7-dihydro indole, benzofuran, benzothiophene, benzimidazole, benzoxazole, or benzothiazole compound or a 7-substituted-4,5-dihydro indole, benzofuran, benzothiophene, benzimidazole, benzoxazole, or benzothiazole compound with a vinyldiazo compound in the presence of a dirhodium catalyst. One or more first horizontal members are attached to the two or more vertical members near the top surface of the baseboard heater. As such, accurate throughput parameters of the standard network of the short range wireless network may be obtained, the network performance may be optimized and the performance of the short range wireless network is improved.