Replacement transmitter for the FieldTrainer® 425 and 425S. The SD-425 system is fully customizable, allowing you the flexibility to set 2 or more transmitters to control the same collar receiver. Consult your Owner's Manual for set up instructions.

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Compatible with:

• FieldTrainer^® 425 (SD-425), 425S (SD-425S)
• WetlandHunter^® 425 (SD-425CAMO), 1825 (SD-1825CAMO)
• SportHunter^® 825 (SD-825), 1225 (SD-1225), 1825 (SD-1825)
• ProHunter^® 2525 (SD-2525)
• HoundHunter^® 3225 (SD-3225)