A wireless station includes a first wireless communication circuit, a second wireless communication circuit, and a control circuit. As proximity of the magnets increases repulsive forces, the second electromagnet of the seat bottom will not contact the first electromagnet of the seat base. Apertures andor cutouts in the panel are provided for positioning hockey equipment. The transition module further transitions the plurality of first links from the degraded state to an online pending state when a degraded link time interval expires and from the offline pending state to an offline state if all pending tasks on the plurality of first links are completed. A refrigerant whose main component is a hydrocarbon having 1 to 4 carbon atoms, or a flammable hydrocarbon fluoride obtained when one or more hydrogen atoms of the hydrocarbon is substituted by fluorine atoms, the refrigerant containing a tetrahydrothiophene as an odorant, and a refrigerating device in which the refrigerant is circulated are provided.