Bluetooth temperature data logger. Bluetooth 5.0 technology. It can collect temperature of the surrounding environment. Such data can be recorded as history data. ATAG-30B can store up to 65000 points of the temperature data. Download PDF document data through mobile phone. It can store and monitor temperature of the environment comprehensively. Its characteristics are small-sized, low-weighted, easily portable and highly accurate for wide use in cold chain logistics, , labs, museums, etc. Widely used: This product is widely used to monitor the transportation and storage process records of food, medicine, chemical products, etc. After use, it can be directly inserted into the computer to obtain a PDF report. Recording range and alarm Large recording data capacity: 65,000 data capacity, meeting the needs of long-term continuous recording, recording is completed Open the program on the mobile phone to connect to Bluetooth to export PDF format files Low power consumption, up to 6 months of battery life Built-in 3.0V button-type lithium battery, under typical application conditions, the battery life can reach 6 months One-time use, worry-free Type: Disposable temperature recorder Measurement range: -30-70 Sensor: Accuracy: 0.5 Storage: 65,000 data points Battery: One 3.0V lithium battery (not replaceable) Color:As Shown Material:plastic Package Contents: 1 * disposable temperature recorder 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.