Rees Scientific provides CDC compliant environmental monitoring to support the COVID-19 vaccination effort while meeting standards for USP <797>, USP <800>, and FDA compliance. System offerings include the monitoring of temperature in cold storage (refrigerators, freezers, ultra-low freezers) from +100 to -196 °C as well as the monitoring of critical equipment and parameters such as temperature, humidity, differential pressure, and more. Users can receive notifications and alarms via interactive phone, texts, or email. The system can be wired, Zigbee wireless, WiFi, or a hybrid of all.