Patent ID: 6913384

Claim:
A device for recording a curing temperature history on precast concrete products, comprising: a socket formed in the shape of a hexahedron, including a collection chamber opened at the upper portion thereof, a hole formed through a lower portion of one side wall, and a magnet installed on another side wall and serving to operate a capsule when the capsule is inserted into the collection chamber, and to protect components of the capsule when the device is buried in a designated position of the precast concrete product to be cured; and a capsule formed in the shape of a hexahedron, accommodated in the collection chamber of the socket, and provided with a MCU (Micro Controller Unit) installed on a printed circuit board located within the capsule and switched on/off by the magnet of the socket, so that the MCU senses a curing temperature of the precast concrete product when the device is buried in the designated position of the precast concrete product or light entering into the precast concrete product when the precast concrete product is cured, informs a user of data regarding the sensed temperature and light, and stores the data with the control of the MCU.