An intradermal needle assembly that is attachable to a prefillable container intended for intradermally injecting substances into an animal includes a needle cannula supported by a hub portion. The pixels are each provided with a sensor portion and a switching element that reads out charges generated at the sensor portion and outputs the charges to a signal line. The adjustment device includes a telescopic mounting device. The datapage merging process may be performed at either the server side or the client side. The switch member further includes two support portions for selectively supporting a portion of the other pawl that disengages from the inner longitudinal wall of the transverse receptacle, thereby supporting the other pawl that engages with the drive member. A wireless communication apparatus 110 communicates with a wireless terminal 300 and a wired communication network.