Expand your SportDog Dog Training Collar to two or more dogs. Add another dog to your current SportDOG Brand electronic collar system or replace a lost or broken collar receiver with the SDR-FH Add-A-Dog Receiver.

The original collar receiver for the FieldTrainer SD-400S, this unit can be used with any SportDOG Brand FieldTrainer , SportHunter SD-800, WetlandHunter SD-400CAMO, ProHunter SD-2500, UplandHunter SD-1850.

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