The red button corresponds to the red B button on the X-Box controller. Right now it expands a sort of written diagnostics/help/notes dialog xspand-box when pressed. It expands the same way the inventory box does. Inside it is a bunch of text that conforms to the size of the box by increasing,decreasing the number of letters contained in the large chunk of text.
At the top is a build in unit pin also called a dog-tag, or a bot-tag. The dog-tag contains JANITR reg. code "j.u." and the version number, "v1.01", of the model. Note that it does not state the version of the system inside, nor does it state possible add-ons or extensions that could've been implemented. However the colors to the far right of the dog-tag will tell you something about some basic and quite superficial add-ons.
The little round widget under the inventory button is just for fancyness.