ODK Sensors Framework

Hi,
Please, I want to knwo if ODK Sensors Framework is either a part of ODK suite or a part of ODK-X suite ?
And why I don't see documentation about ODK Sensors in the official documentation of ODK or ODK-X ?

Thanks for your answers.
Greetings

Sensors is a part of ODK-X. Ask at https://forum.odk-x.org/t/status-of-sensors-framework/334/2.