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Add-A-Dog Collar Only
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  • COLLAR RECIEVER ONLY: Compatible with the SportDOG Brand Contain + Train (SDF-CT), In-Ground Fence (SDF-100A), and FieldTrainer 425X (SD-425X)

  • THREE MODES OF OPERATION: Included collar works with the fence boundary and the handheld remote; you choose when you want it to work with each system (fence, trainer, or both)

  • RECHARGEABLE AND WATERPROOF: Collar features Lithium-Ion batteries with 2-hour quick charge and one to two-month battery life: waterproof and submersible to 10 ft. with DryTek technology

  • UNLIMITED DOGS: Contain an unlimited number of dogs with additional collars (SDF-CTR); fits dogs 10 lb. and up

  • TONE, VIBRATE, AND STIM: Collar gives tone (beep) and vibration (buzz) warning before moving to one of seven static stimulation levels (you choose the best level for your dog)

  • CUSTOMER CARE: Includes two-year manufacturer’s warranty; call our US-based customer care center for support

Customer ratings by feature

Vibration strength
5.0  5.0
Easy to use
4.8  4.8
Battery life
4.5  4.5
Water resistance
4.5  4.5
See all reviews

Product Description

Add another dog to your current SportDOG Brand Contain + Train system (SDF-CT) or replace a Collar Receiver with the SDF-CTR Add-A-Dog Receiver. The Contain + Train system's Containment mode expands to any number of dogs and the Training mode expands to 3 dogs.



Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 6 x 3.06 x 6.38 inches; 14.39 Ounces
  • Item model number ‏ : ‎ SDF-CTR
  • Batteries ‏ : ‎ 1 Lithium Ion batteries required. (included)
  • Date First Available ‏ : ‎ September 1, 2017
  • Manufacturer ‏ : ‎ Radio Systems Corporation
  • ASIN ‏ : ‎ B0756RXFWF
  • Country of Origin ‏ : ‎ Vietnam