Sensor: Built-in NTC thermistorData Interface: USB InterfaceData output: USB socket directly connected to the computerInstructions for use: long press the key for more than 4 seconds. after the interface shows sign. it means the instrument start recording.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.Type: Digital Temperature Data LoggerPower supply: Built-in wide temperature CR2032 button battery or USB interfaceMaterial:ABScolour:White + BluePackage Contents:1 x Digital Hygrometer1 x English manualOnly the above package content. other products are not included.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.When shopping. please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and . we have provided detailed information about the product. including its features and specificationsWe want you to be completely satisfied with your purchase. so if you have any questions or concerns. please don''''''''t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it