This replacement battery module is designed specifically for PetSafe electronic fences and training devices. The module has a 3-volt capacity and is compatible with the PetSafe RFA-188 model. It is a great choice for dog owners who need to replace their battery and ensure their pet's safety. The module comes with two batteries, making it a convenient all-in-one solution. It is compatible with various PetSafe products and is an essential component for any pet owner who wants to keep their furry friend safe. Get your PetSafe 3 Volt Module RFA-188 Replacement Battery today and enjoy the peace of mind that comes with knowing your pet is protected.