It was "guided"?
>SITU
Situs
Law
In law, the situs of property is where the property is treated as being located for legal purposes. This may be important when determining which laws apply to the property, since the situs of an object determines the lex situs, that is, the law applicable in the jurisdiction where the object is located, which may differ from the lex fori, the law applicable in the jurisdiction where a legal action is brought.
https://www.jencotech.com/documents/products/EMCORE-SITU2400-07_09.pdf
SITU
Small Integrated Transmitter Unit