Now Let me introduce our great tempU06 L100 bluetooth temperature data logger for the COVID-19 vaccines. It can be used from -100 to 80. Advantages 1. High accuracy. The temperature accuracy is �±0.5â?? from -100â?? to 80â?? 2. support bluetooth and USB 3. reusable with battery replaceable design. 4. magnetic holder, very easy to install 5. IP65 water proof. 6. temperature probe replable. I am very happy to share more information with you.