PetSafe Wireless Pet Containment™ Add-A-Dog® Extra Receiver Collar The PetSafe Wireless Pet Containment Add-A-Dog Receiver Collar lets you add another dog to your Wireless Pet Containment System (PIF-300-21), or replace an existing collar. This waterproof, adjustable collar uses a warning tone followed by safe static correction, so your dogs can enjoy the garden while staying within their boundary. Comfortable and reliable, it lets all your pets play together with confidence. Key Features Compatible with the PetSafe Wireless Pet Containment System (PIF-300-21). Adjustable collar fits most dogs, with neck sizes from 15 to 71 cm. Lightweight and waterproof for safe outdoor use in all weather. Tone only mode plus static correction for flexible training. Low battery indicator for reliability. Add unlimited pets by buying additional Add-A-Dog® collars. Specifications System type: PetSafe Wireless Pet Containment (not for wired in-ground systems). Correction types: tone and static. Neck size: approximately 15 to 71 cm. Battery: replaceable PetSafe RFA-67 6V (sold separately). Receiver: waterproof with low battery indicator. What's Included 1 x Wireless receiver collar 1 x Short and long contact point set 1 x Test light tool 1 x User manual Why Choose PetSafe PetSafe is trusted by pet owners worldwide for safe, effective and expert recommended training and containment products. With the Add-A-Dog receiver collar you can expand your Wireless Pet Containment System to include all your dogs, giving them freedom to play while keeping them safe at home. FAQs Can I use this collar on its own?No. It is an additional or replacement collar and must be paired with a PetSafe Wireless Pet Containment System (PIF-300-21). Is the collar waterproof?Yes. The receiver collar is fully waterproof and suitable for outdoor use in all weather. How many dogs can I add?As many as you like, by buying additional Add-A-Dog receiver collars, all compatible with the PIF-300-21 system.