A pressure measuring unit according to an embodiment of the present disclosure includes: a body part configured to have an upper surface, a lower surface, and a plurality of side surfaces; a connector part configured to be provided to at least one side surface among the plurality of side surfaces of the body part; a pressure measuring part coupled to the upper surface of the body part and configured to measure a pressure applied toward the upper surface of the body part from the outside; and a control part connected to the pressure measuring part to receive the measured pressure value from the pressure measuring part and configured to output the received pressure value to a communication line connected thereto.