Open sesame! The parcel contains a cheap and nasty 2 way splitter which these cowboys have pressed into service as a TV/FM combiner. This has been wrapped with insulating tape and the whole thing had filled with water. This cheap splitter is for internal use only, and should certainly never be used in this way. If the signals need combining, the UHF and FM signals should be frequency filtered to stop them interfering with each other. This was supposedly done by a "professional installation firm".