A storage unit for use on a handlebar of a piece of exercise equipment, such as a spinning bike or cycling bike. A lower end of the inlet is positioned at a lower side of the nozzles, and the liquid storage chamber is arranged at a position shifted from the nozzles, in a first-direction side of the front-rear direction, and shifted from the conveyance route, to a second-direction side of the left-right direction. In one embodiment, the heat exchanger comprises a tube having at least one high temperature channel and one low temperature channel extending through the interior of the tube. Each session key pair is added to the encrypted data.