An air conditioner to be installed in a target space (SP), configured to have its operating state switched on the basis of a command sent from a portable communication terminal in possession of a user, and configured to perform air conditioning of the target space, the air conditioner comprising: a specific information storage component configured to store specific information including identification information that identifies itself; a specific information notification component configured to transmit notification of the specific information to the portable communication terminal; a command receiving component configured to form a wireless communication network (NW1) in order to receive the command sent from the portable communication terminal to which notification of the specific information was transmitted; and an actuator drive component configured to execute switching control that switches action of an actuator on the basis of the received command, wherein the specific information includes operable period information that designates an operable period in which it is possible for the operating state to be switched by the portable communication terminal to which notification was transmitted, and the actuator drive component does not execute the switching control in response to the command sent from the portable communication terminal for which the operable period designated in the operable period information transmitted has expired, characterized in that the air conditioner further comprises a near-field wireless communication module configured to form a near-field wireless communication network (NW2) which is different from the wireless communication network formed by the command receiving component, wherein the specific information notification component is configured to transmit the notification of the specific information to the portable communication terminal by the near-field wireless communication via the near-field wireless communication module. a specific information storage component configured to store specific information including identification information that identifies itself; a specific information notification component configured to transmit notification of the specific information to the portable communication terminal; a command receiving component configured to form a wireless communication network (NW1) in order to receive the command sent from the portable communication terminal to which notification of the specific information was transmitted; and an actuator drive component configured to execute switching control that switches action of an actuator on the basis of the received command, wherein the specific information includes operable period information that designates an operable period in which it is possible for the operating state to be switched by the portable communication terminal to which notification was transmitted, and the actuator drive component does not execute the switching control in response to the command sent from the portable communication terminal for which the operable period designated in the operable period information transmitted has expired, characterized in that the air conditioner further comprises a near-field wireless communication module configured to form a near-field wireless communication network (NW2) which is different from the wireless communication network formed by the command receiving component, wherein the specific information notification component is configured to transmit the notification of the specific information to the portable communication terminal by the near-field wireless communication via the near-field wireless communication module. <EOS>