Accessory having a communication function for internet of things

An accessory comprising:

• a main body that includes a communication module configured to communicate with a predetermined network;
• and
• a transmission member that includes a window that is exposed to an outside and configured to pass a predetermined optical signal,
• wherein the main body further includes:
• an optical signal light-emitting unit that is located inward of the window and configured to emit the predetermined optical signal in a transmission direction, and
• a side member that defines a circumferential external appearance of the main body, the side member defining a transmission member location hole that is configured to receive the transmission member, and
• wherein the transmission member further includes a disposition guide that protrudes from an inner surface of the window, the disposition guide being configured to guide the optical signal light-emitting unit to a set position relative to the transmission member.

An accessory comprising:

• a main body that includes a communication module configured to communicate with a predetermined network;
• and
• a transmission member that includes a window that is exposed to an outside and configured to pass a predetermined optical signal,
• wherein the main body comprises:
• an optical signal light-emitting unit configured to emit the predetermined optical signal in a transmission direction, and
• a side member that defines a circumferential external appearance of a circumference of the main body and that includes an inclined surface that slopes with respect to a central axis passing through the main body in a vertical direction, the inclined surface defining a transmission member location hole that is configured to receive the transmission member, and
• wherein the window includes a central part that is parallel with the central axis.