An energy consumption efficiency improving agent is disclosed which forms a substance having a large adherability to an applying object and a high adherence to a contacting object and greatly reduces energy loss, and attains improvement of an energy consumption efficiency substantially equal to three powers of adhesion improving rate under ordinary use conditions. The device has the feature according to the invention that the fastening means are at least partly provided with friction-reducing means on at least the side to be brought into contact with the relevant limb part. The relay server transmits data on the destination display screen to each of the first and second remote panels. The threshold voltage may be changed with pulses of different amplitude andor different pulse fall times.