The device is applied to transmitting and receiving of hot water bag

The utility model particularly relates to a device applied to transmitting and receiving of a hot water bag, which comprises a circuit board provided with a signal transmitting metal piece A and a signal receiving metal piece B. The circuit board is provided with an integrated circuit chip U1, the signal transmitting metal piece A is respectively connected to a pin 8 and a pin 1 of the integratedcircuit chip U1, and the pin 8 and the pin 1 of the integrated circuit chip U1 are respectively connected with the signal transmitting metal piece B; the common end of the signal transmitting metal piece A and the eighth pin of the integrated circuit chip U1 is connected with a VDD input end, the seventh pin of the integrated circuit chip U1 is connected with a VO output end, the signal receivingmetal piece B is connected to the fifth pin of the integrated circuit chip U1, and the fourth pin of the integrated circuit chip U1 is connected with a grounding end GND. The beneficial effects of theutility model are that thr