Model:RC-5 Type: Digital Temperature Data 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 sets 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 class: IP67 Use battery: CR2032 button battery(Not included) Instructions for use: long press the key for more than 4 seconds, after the interface shows sign, it means the instrument yi8jing recording. 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. color:Blue+white Material:ABS size:75 x 33 x 13mm Package Contents: 2 x Digital Hygrometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.