This is a special case of component in MORSE. Since all sensors or actuators must be attached to one robot, it would not normally be possible to use “stand-alone” sensors in the environment.
If you need to use a sensor in this way, (i.e. for motion capture sensors, or independent cameras) you should add an environment robot to the scene, and make it the parent of your stand-alone sensors.
This robot has no visual representation, and consists of a single Blender Empty. Its only purpose is to provide the base to attach sensors. A single environment robot should be the parent of as many sensors as needed.
No adjustable parameters