According to the present invention, there is disclosed a frame synchronization device which detects a time point to start a data frame from a received signal. A detection circuit is connected to the first electrode to charge and discharge the electrode unit and to detect a capacitance of fuel, which flows through the space. A second component has opposite third and fourth sides. The electromagnetic coil surrounds the passage, is disposed in a housing, and is energizable to provide magnetic flux that moves the armature between the first and second configuration to permit fuel flow through the passage. Each beam has an independent electrical contact pad at the base end, and all beams are connected together electrically at the free end. The cable clamp includes a pair of cable-holding bodies each including a pillar portion vertically extending from the base, and a cantilever portion extending from an end of the pillar portion, remote from the base, in a direction substantially at right angles to the pillar portion.