Add extra dogs to your PetSafe In-Ground Fence system or Indoor Pet Barrier Transmitter. The rechargeable In-Ground Fence Receiver Collar uses four adjustable levels of static correction and a tone-only mode for training. Lightweight collar weighs only 2.5 oz. and fits dogs 8 lbs. and up. Powered by included RFA-67 battery. Includes waterproof receiver, adjustable nylon collar, battery, short contact points and operating guide. Compatible with PetSafe in-ground fences except UltraSmart Rechargeable In-Ground Fence and Yard Max Rechargeable In-Ground Fence. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Containment Systems.