An object is to provide a pulse signal output circuit capable of operating stably and a shift register including the pulse signal output circuit. The position measurement is preferably combined with transponder measurements of tire pressure andor temperature, and the measurement information is transmitted from a tire or wheel antenna to a receiver with one or more antennas on the vehicle. The sealing resin section includes a central region provided over and around the semiconductor device, and a marginal region provided in the periphery of the central region. The separating force is maintained at a minimum value so long as the releasable connector holds the struts in their first position. The reservoir is provided with a vent at the rear of the iron and at the top of the reservoir, the iron is provided with an opening situated at the front of the iron above the reservoir, and the iron further has a tube connecting the vent to the opening.