The Elitech RCW-800W-THE wireless temperature & humidity data logger based on the Internet of Things is widely used in remote temperature monitoring of foodstuffs, catering, logistics, and supply chain industries that require HACCP system certification. It can transmit data by WiFi to a cold-chain cloud platform. Users can view, manage, and monitor data online remotely by browser or smartphone APP. It also has the functions of alarm reminder via the platform and buzzer. The Elitech RCW-800W-THE wireless temperature & humidity data logger has 1 temperature and 1 humidity sensor. A built-in rechargeable lithium battery can provide real-time data uploading and platform alarm service even in case of a cold storage power outage. Export data flexibly in multiple formats via the cloud platform.