On occasion you may need to check which installation key was used to enrol a sensor. You can do so by comparing the sensors Installer ID with the Installation Key's Net Key value.
Go to the Sensors section and click into the sensor in question to view its details page. Take note of the Installer ID.
Go to the Install Sensors section. Click the copy icon under the "Net Key"
Compare these two values; the Installer ID on a sensor should be the same as the Net Key of the installation key used.
If you need to check a large list of sensors, you can perform an export of all sensors from the main sensors list page, or use the LimaCharlie API.