Here is a Gigabit extender for your network with outdoor rating. The TRENDnet 2-Port Industrial Outdoor Gigabit PoE++ Extender has an extreme temperature rated IP67 housing that extends your PoE++ connection up to 656ft. The TRENDnet TI-BE2002 allows daisy chaining up to 4 extenders for PoE network extension up to 1640ft.
This PoE extender has built-in 4kv surge protection. It simply takes a single PoE++ connection and extends it. It has a wall mountable design.