This temperature recorder is mainly used for temperature monitoring and recording of food and medicine storage and transportationenvironments, such as refrigerated bags, refrigerated trucks, containers,etc.This product is connected to a computer via USB, and the recorded data is directly output as a PDF report, the temperture probe is built-in,powered by a CR2032 wide temperature lithium battery.The product is equipped with a barcode. Features: Quickly Export Reports within 5 seconds: Insert the recorder into the USB port of the computer to view the PDF data report Dustproof and Waterproof: With IP67 rating, it can even be soaked in water for a few minutes Dual LED Display: Short press the button, you can judge the working status of the recording by the flashing of the red (green) indicator light. Small body but big use: The unit weight of this product is only 11g, easier to transport while meeting needs Specification: Elitech TinyUSB Single-Use Temperature Recorder Manual