A new Dahlia plant particularly distinguished by a dark-red flower color, a compact, and semi-upright habit and good basal branching, is disclosed. The body frame includes hinge structures, , and for causing the user of a wheelchair to lie down, and cross braces and for implementing the fold of the wheelchair. The sensing device is further provided with a body, which encapsulates the first sensing element and at the same time acts as a carrier for the conductors, so that the contacting side is a face of the body. At any point along the path the protocol data unit carries information which allows it to be carried towards the second node, or to follow a reverse path towards the first node. A valve stem is preferably secured and axially displaceable within the internal cavity of the housing to effect movement of the sealing member from the first position to the second position.