FieldTrainer® 425X/SportHunter® 825X Add-A-Dog® Collar fencing allowing you the flexibility to

allowing you the flexibility to set 2 or more transmitters to control the same collar receiver

0 GPS Tracking (TEK-V2L) and TEK Series 2

or one of the 21 levels of static stimulation

allowing you to easily deliver the stimulation that best fits the situation and your dog’s temperament

FieldTrainer® 425X/SportHunter® 825X Add-A-Dog® Collar fencing allowing you the flexibility toThe Collar Receiver for FieldTrainer 425X, SportHunter 825X and SportTrainer 575E 875E Remote Trainers. Add another dog to your current SportDOG Brand electronic training collar system or replace a Collar Receiver with the SDR AFX Add A Dog Receiver Collar.