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Add a second dog to your FieldTrainer 425XS Stubborn Dog system
The SDR-AXS is the Add-A-Dog receiver collar specifically built for the FieldTrainer 425XS — SportDOG’s higher-output system designed for dogs that require a stronger correction range. The “S” designation matters here: while the SDR-AXF fits the same list of compatible systems, the SDR-AXS delivers the elevated stimulation range that matches the 425XS base unit. If your primary system is the 425XS and your second dog also needs that higher output, this is the correct collar.
Like all SportDOG Add-A-Dog collars, the SDR-AXS pairs to your existing transmitter in minutes, gives you independent control of each dog, and uses the same DryTek waterproof construction as the primary collar. Submersible to 25 feet, 2-hour charge, 40–60 hours per charge.
Compatible systems
| FieldTrainer 425X, 425XS, 425, 425S | SD-425X, SD-425XS, SD-425, SD-425S |
| SportHunter 825X, 825, 1225X, 1225, 1825X, 1825 | SD-825X, SD-825, SD-1225X, SD-1225, SD-1825X, SD-1825 |
| SportTrainer 575E, 875E, 1275E | SD-575E, SD-875E, SD-1275E |
| WetlandHunter 425X Camo, 425 Camo, 1825X Camo, 1825 Camo | SD-425XCAMO, SD-425CAMO, SD-1825XCAMO, SD-1825CAMO |
| ProHunter 2525 | SD-2525 |
| HoundHunter 3225 | SD-3225 |
| UplandHunter 1875 | SD-1875 |
Specs & features
| Stimulation output | Higher-output “S” range — matches the 425XS base system |
| Waterproofing | DryTek — submersible to 25 feet |
| Battery | Rechargeable Li-ion — 2-hour charge, 40–60 hours per charge |
| Dog size | 8 lbs and up, neck sizes 5”–22” |
| Low battery indicator | Yes |
| Charging | Docking station included |
Not running the 425XS? If your system is a standard FieldTrainer 425X, SportHunter 825X, or any other SportDOG system, use the SDR-AXF instead.
