[cuggle]

Just found this in another thread on here:

It's whats called a galvanic isolator. Basically there is no direct connection between the cable from outside, and your equipment. This acts as a safety feature - should equipment in the cabinet go faulty, it reduces the risk of damage/electrocution to your equipment and you, and vice versa. Also, it prevents something called a "ground loop" which causes interference.

---------- Post added at 15:14 ---------- Previous post was at 15:12 ----------

no it was inside the house, the brown box is outside at the front of the house and the isolator is inside the room at the back of the house