Patent ID: 11902045
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 13:
14. A system-recognizing device that, in a device network in which communication is established between a plurality of devices, uses a low-frequency signal of a frequency lower than a first frequency used in the communication to perform system recognition processing that identifies a device connected by a wired line, wherein
a signal of the first frequency is used to transmit predetermined instruction information,
the low-frequency signal includes
first information for connection to a network, and
identification information of a group to which a device to which the low-frequency signal is transmitted belongs, and

the predetermined instruction information is transmitted to a device that
has received the low-frequency signal,
has registered the first information, and
has connected to the network, and
for which participation in the network has been approved.