A torsion beam type suspension is provided which includes a U-shaped stabilizer consisting of a stabilizer main body and a pair of laterally opposite stabilizer arms. The passage communicates with the tube and has open end. The neighboring nodes may store first hop count information based on the wireless message received from the gateway. In the case of an auction, in the event that a bidder is not the high bidder, the reserved funds are released. The voltage monitor includes a plurality of comparators and a plurality of constant voltage elements each providing a constant voltage determining the threshold.