Marathon's WiFi-enabled Temp/RH data loggers deliver real-time temperature and humidity data 24/7 from any location over a local network or via the Internet. A facility can leverage WiFi networks with WiFi 802.11 b/g/n connectivity to wirelessly monitor multiple floors, buildings, rooms, and other locations simultaneously. The system detects high and low temperature and humidity excursions, and also indicates power outages, which triggers audible and visible alarms, and sends alert notifications via cell phone and/or email. For hospitals, laboratories, and blood banks, the EDL-WiFi Temp/RH provides quality assurance and quality control for monitoring refrigerators, freezers, and blood storage areas via high-performance temperature sensors and data logging.