When it comes to power adaptors, it’s always nice to know you’ve got a spare on hand. Be prepared and buy a backup adaptor for your pet containment system. This AC adaptor plugs into your transmitter and has a 6-foot cord. This adaptor is compatible with the Wireless Pet Containment System, Stay & Play® Wireless Fence with Replaceable Battery Collar, Stay & Play® Wireless Fence for Stubborn Dogs, Deluxe Little Dog In-Ground Fence™, In-Ground Cat Fence™ and the Indoor Radio Fence. Your pet deserves the best. Trust PetSafe® to keep your pet healthy, safe and happy. Features Compatible with: Wireless Pet Containment System (PIF-300) Stay & Play® Wireless Fence with Replaceable Battery Collar (PIF00-15001) Stay & Play® Wireless Fence for Stubborn Dogs (PIF00-13663) Deluxe Little Dog In-Ground Fence™ (PIG20-11041) In-Ground Cat Fence (PCF-1000-20) Indoor Radio Fence (ZIRF-100)