Abstract: An embodiment of the present disclosure may provide an Internet-of-Things (IoT) sensor attached to the surface of industrial equipment to acquire data, the IoT sensor including: a first substrate; a first connector electrically connected to the first substrate and attached to the surface of the first substrate to transfer a measurement signal of the sensor; a cable formed of a flexible conductive wire and having one end connected to the first connector; a second connector connected to the other end of the cable and configured to receive the measurement signal of the sensor; and a communication module attached to a second substrate connected to the second connector.