Sensor: Built-in NTC thermistor<br>Data Interface: USB Interface<br>Data output: USB socket directly connected to the computer<br>Instructions for use: long press the key for more than 4 seconds, after the interface shows sign, it means the instrument start recording.<br>Application: It is mainly used to monitor and record the temperature data of foods, , 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.<br><br>Type: Digital Temperature Data Logger<br>Power supply: Built-in wide temperature CR2032 button battery or USB interface<br>Material:ABS<br>colour:White + Blue<br><br>Package Contents:<br>1 x Digital Hygrometer<br>1 x English manual<br><br>Only the above package content, other products are not included.<br>Note: Light 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.