Elitech RCW-800 Wi-Fi temperature logger is a two-channel temperature and relative humidity data logger based on the Internet of Things technology. All data recorded is transmitted via Wi-Fi network infrastructure. There is no communication fee, thereby, reducing operational costs and fees. With this technology, users can view, manage and monitor data from the Elitech Wi-Fi temperature logger in real-time. It allows for offline logging and online synchronization to ensure data safety and accuracy. They can access up-to-date data via a smart-phone app or browser. A freely settable upload interval, data statistics, and analysis make all Elitech Wi-Fi temperature loggers convenient and reliable. Their multiple alarm modes, threshold, and upload intervals can be configured depending on the cold chain supply management system. For a fact, this Wi-Fi temperature logger is versatile equipment suitable for pharmaceutical, cold storage, cold cabinet, medical cabinet, cold food storage, fresh food storage, laboratory, etc.