Add extra dogs to your PetSafe In-Ground Fence system or Indoor Pet Barrier Transmitter. TheRechargeable In-Ground Fence Receiver Collar uses four adjustable levels of static correction and a tone-only mode for training. It fits dogs 5 lbs. and up with neck sizes from 6-26. Lightweight, waterproof collar (submersible up to 5 ft.) uses a built-in rechargeable battery that charges in 2-3 hours. Use any length collar strap that is non-metallic and 0.75 wide with the pass-through receiver. Add an unlimited number of pets with the purchase of additional receiver collars. System includes receiver collar, receiver charger, short and long contact points, test light tool, contact-point wrench, and operating guide. Compatible with these PetSafe In-Ground Fence systems: PIG00-13661, PIG00-10777, PIG00-10773, PIG00-11007, and PRF-3004W. Not compatible with PetSafe wireless, PetSafe UltraSmart or lnnotek systems. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Containment Systems.