The smart box (1) of the present invention comprises a case (2) holding food products, a cover (3) which enables the case (2) to be closed and has a magnetic assembly, at least one temperature sensor (4) which is placed inside the case (2), at least one acceleration sensor (5) which detects whether the case (2) moved or not, and which is placed in the case (2), a beacon (6) which emits a predetermined identification (ID) signal, a control unit (10), which is adapted to receive temperature data from the temperature sensor (4), to receive movement data from the acceleration sensor (5), to compare these data with a predetermined value, and, if the received data are greater than the predetermined values, to transmit ID signal emission command to the beacon (6) and to activate the buzzer (8), at least one terminal (7) which, upon receiving the ID signal emitted by the beacon (6), gives a warning to the user for the device that is matched with the said ID signal, and at least one energy source (9) which supplies the electrical energy required for the operation of the sensors (4) and (5), beacon (6) and the control unit (10).