Sensor: Built-in NTC thermistor Data interface: USB interface Data output: USB socket directly connected to the computer Instructions for use: Press the button for more than 4 seconds, and the interface displays the symbol to indicate that the instrument starts recording. Application: Mainly used to monitor and record the temperature data of food, chemicals, etc. during storage and transportation. Widely used in various links of warehousing, logistics and cold chain, such as refrigerated containers, refrigerated trucks, refrigerated bags, cold storage, laboratories, etc. Type: Digital temperature data logger Power supply: Built-in wide temperature CR2032 button battery or USB interface Material: ABS Color: White + Blue Package Contents: 1 x Digital Hygrometer 1 x English Manual Only the above packaging content, other products are not included. Note: Light and different monitors may cause the color of the items in the picture to be slightly different from the actual object. The measurement allowable error is +/- 1-3cm.