Sensor: Built-in NTC thermistor_x000D_ Data Interface: USB Interface_x000D_ Data output: USB socket directly connected to the computer_x000D_ Instructions for use: long press the key for more than 4 seconds, after the interface shows sign, it means the instrument start recording._x000D_ Application: It is mainly used to monitor and record the temperature data of foods, drugs, chemicals, etc. during storage and transportation. It is widely used in all aspects of warehousing, logistics and cold chain, such as refrigerated containers, refrigerated trucks, refrigerated bags, cold storage, Laboratory etc._x000D_ _x000D_ Type: Digital Temperature Data Logger_x000D_ Power supply: Built-in wide temperature CR2032 button battery or USB interface_x000D_ Material:ABS_x000D_ colour:White + Blue_x000D_ _x000D_ Package Contents:_x000D_ 1 x Digital Hygrometer_x000D_ 1 x English manual_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_