When information about an image forming apparatus is registered in a print service environment, to perform reservation printing, a relay virtual printer determines whether a print job acquired from a print service is reserved, and reserves a print job as a reservation print target after a user selects a bookmarklet and issues an instruction to perform the reservation printing. The valve is constructed with an elongate stem or shaft that facilities the assembly of the valve into the trigger sprayer and a positioning plug that solely holds the valve in a centered position in the liquid passage of the trigger sprayer. A display may be arranged in each vehicle for displaying the transmitted weather conditions to an occupant of the vehicle. Therefore, an error in measurement by the sensor unit can be reduced, thereby achieving accurate measurement.