RC-5 High-precision Digital USB Temperature Data Logger for Warehouse Storage, Refrigerated Transport, Laboratory, Etc Specifications: Model:RC-5 Type: Digital Temperature Data Logger Power supply: Built-in wide temperature CR2032 button battery or USB interface Temperature range: -30C ~ 70C Temperature measurement accuracy: -20 C ~ 40 C Within the temperature range, the accuracy is 0.5 C; the remaining 1 C Recording capacity: 32000 set Record interval: 10 seconds to 24 hours can be set as needed Resolution: 0.1 C Sensor: Built-in NTC thermistor Data Interface: USB Interface Data output: USB socket directly connected to the computer Protection cla: IP67 Product Size: 75 x 33 x 13 (mm) Use battery: CR2032 button battery(Not included) Instructions for use: long pre the key for more than 4 seconds, after the interface shows sign, it means the instrument yi8jing 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. Package list: 1 x Digital Hygrometer 1 x English Instruction Manual