Engineered based on Californiaâs Title 24 requirements for economizer fault detection and diagnostics (FDD), EconomizerPro uses wireless sensors installed in air passages to measure inside air, outside air, and current. The EconomizerPro collects data and uploads it to the cloud via a cellular link. Problems are analyzed to identify faults, such as running air conditioning when the outside air is cold enough to cool the building for free. Installation takes 30 minutes to one hour. Fault-detection data streams are communicated immediately, and other faults are identified in 24 hours to a week