TRANSMITTER AND ID REGISTRATION DEVICE

A transmitter is configured to be attached to a tire valve and transmit a data signal to a receiver. The transmitter includes a trigger receiving unit configured to receive a trigger signal transmitted from an ID registration device, the trigger signal containing a command to the transmitter, a specification storage unit configured to store multiple types of specifications, an ID storing unit configured such that an ID code contained in the trigger signal received by the trigger receiving unit is written into the ID storing unit, a linking information storing unit configured to store linking information that links each of the specifications and ID codes to each other, and a controlling unit configured to cause, based on the linking information, the transmitter to operate in accordance with the specification, which is linked to the ID code stored in the ID storing unit.