PetSafe Lightning Protector for Fence Transmitters
Lightning strikes can travel miles through the earth and your wire loop, damaging your fencing transmitter. Our lightning protector protects your transmitter from dangerous power surges. Plugs directly into the wall, then plug your transmitter into the convenient piggyback outlet. A few simple wiring connections and installation is done; includes complete instructions. Important insurance to protect your in-ground fence investment.  For use in the US only.  This unit is compatible with all US 110v outlets and are not to be used with 220v international voltage.