Ensure your pet containment system stays fully functional and protected with this convenient two-piece PetSafe bundle. The Replacement Transmitter (RFA-435) restores or upgrades your in-ground fence system, covering up to 25 acres and featuring a wire-break detection alarm for added security. It works seamlessly with 1420 gauge insulated boundary wire to maintain a reliable perimeter for your pet. Paired with the Surge Protector (LP-4100-1), this bundle safeguards your transmitter from unexpected power surges and lightning strikes, helping prevent costly downtime and replacements. Perfect for pet owners replacing a failed transmitter, expanding coverage, or looking for long-term system protection, this bundle combines performance and peace of mind in one easy purchase. Setup is simplemount the transmitter, connect to the boundary wire and power adapter, plug the surge protector into your outlet, and connect the transmitter through it. Backed by PetSafe, a trusted leader in pet containment solutions, this bundle delivers durability, safety, and reliability for your pets freedom and your peace of mind.