Our Signals are enriched with the IAB industry categorization which is a standard. In order to search by IAB category, use the Power Search like so:
iabCategory CONTAINS "Real Estate"
=> This will produce all Signals that have the IAB category Real Estate or its children.
iabCategory IN ["Real Estate", "Automotive", "Business"]
=> This will produce all Signals that have any of the IAB categories Real Estate, Automotive, or Business.
Here is a list of all possible IAB categories: