Ultra-low temperature transportation environments can be used in many industries, such as vaccines, blood products, biological samples, food, etc., to provide a suitable storage environment for sensitive items. Real-time temperature data loggers are used to monitor temperature changes in the transportation environment. No matter where the items are transported, managers can understand the data in a timely manner and track the entire journey. Ultra-low temperature transportation environments require strict temperature control and monitoring systems. Temperature changes will have a great impact on the quality and safety of items. Freshliance\'s Fresh Tracker 10-ETU 4G temperature recorder has an external probe, which is suitable for ultra-low temperature environment temperature monitoring. The lowest temperature can reach -196℃, which meets the working requirements of liquid nitrogen environment and can work continuously at a constant temperature in this environment. IoT temperature data recorders are very suitable for cold chain transportation temperature management, which can improve efficiency and item safety. Fresh Tracker 10-ETU uses 4G/5G network technology to ensure real-time and complete data upload. Managers can view data and receive abnormal alarms through APP or PC platform anywhere in the world to ensure the quality and safety of items.