SportDOG Brand Contain + Train Add-A-Dog Collar - Additional, Replacement, or Extra In-Ground Fence + Remote Training Collar - Waterproof and Rechargeable with Tone, Vibrate, and Shock - SDF-CTR

Add another dog to your current SportDOG Brand Contain + Train system (SDF-CT) or replace a Collar Receiver with the SDF-CTR Add-A-Dog Receiver. The Contain + Train system's Containment mode expands to any number of dogs and the Training mode expands to 3 dogs.