To Install it go to Renowned Games -> AI Tree -> Integrations.
If you using AI Tree version 1.5.0 or earlier, you can find integration in following path: Project Settings -> Renowned Games -> AI Tree -> Integrations.
Find Sensor Toolkit 2 and click Import button.
AI Tree Integrations window
The Package Manager will check the integration for dependencies and if there are missing, it will offer to install them or view.
Integration installer dialog
Click Import button to install integration.
Sensor Toolkit 2 import window
After that will opened Import Window, click Import button to complete install.