Add another dog to your current SportDOG Brand® electronic collar system or replace a lost or broken collar receiver with the SDR-FS Add-A-Dog® Receiver. The original collar receiver for the FieldTrainer®  400, this unit can be used with any SportDOG Brand® FieldTrainer® , SportHunter® 800, 1200, 1800, WetlandHunter® 400, 800, 2000, ProHunter®, UplandHunter™, or HoundHunter® transmitter.

Includes a black collar strap and a green collar strap.