Compact light registrar, with size based on fifty kopeck coin, is ideal for the use before the refrigerator transportation. Conducts measurements, and writing into the memory of the values of temperature through different time intervals during the long time up to 1 year. Large volume of internal storage, to 2048 elements of data. Possibility of connection for the sake of PK on the means of module for the transmission of data OF RS-232C, (option 3920-01). Graphing.