Perimeter Technologies Four Pack Perimeter Pet Fencing Dog Collar Batteries by (4-Pack)

Works in Perimeter Tech Wired dog Fence Collars. Perimeter 6v Battery is Manufactured by Perimeter Technologies for Extreme Dog Fence and Perimeter Technologies Electric Dog Fence Receiver Collars Compatible with Extreme Active System, Perimeter Invisible Fence 700 Series Compatible Collars and Perimeter Comfort Contact (PCC-200) and others Does not work in Invisible Fence Brand collars.