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Add another dog to your current SportDOG Brand In-Ground Fence system (SDF-100A) or replace a Collar Receiver with the SDF-R Add-A-Dog Collar Receiver. The In-Ground Fence system is expandable to any number of dogs.
Mfr. item number - SDF-R
For use with SportDog In-Ground Fence SDF-100 System (sold separately)
For dogs 8 lbs. & up
4 correction levels plus Beep and Vibrate Only
Anti-linger feature keeps dog from constantly testing the boundary
Low battery indicator
Requires 9V battery (included)
Weight: Approximately: .5 pounds
Shipping Dimensions: Approximately 9 x 7 x 4 inches.