Invisible Fence® R21 Compatible Dog Fence Collar 7k Frequency
The Perimeter Technologies Computer ReceiverTM Collar is designed to replace your Invisible Fence brand R21TM collar or add a new pet to your existing Invisible Fence system for a fraction of the cost.
The Perimeter Computer ReceiverTM Collar will work with your existing Invisible Fence brand 7K or 10K dog fence system.
The collar receiver is completely waterproof …
Four Pack Dog Fence Batteries for Invisible Fence R21 or R51 Receiver Collars
These 3-volt lithium batteries will replace your Invisible Fence brand Powercap dog fence collar batteries – at a fraction of the cost! These batteries are guaranteed 100% compatible with your Invisible Fence Brand R21 and R51 receiver. Our batteries batteries are an exact aftermarket replacement to the Invisible Fence Brand Power Cap battery. Satisfaction guaranteed! Youll get quality …