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Invisible Fence® R21 Compatible Dog Fence Collar

3.1 out of 5 stars 63 customer reviews
| 23 answered questions

Price: $159.95 & FREE Shipping. Details
Item is eligible for 6 Month Special Financing with the Amazon.com Store Card. Apply now
Only 7 left in stock.
Sold by Empire Pet Supply and Fulfilled by Amazon. Gift-wrap available.
Progressive(starts low and goes up)
  • Patented three antenna, omni-directional design ensures signal reception regardless of the pet's orientation to the fence
  • These collars will only work with ICT-700 series (ICT-700, ICT-725, ICT-750) fences.
  • Replaces Invisible Fence brand R21 Collar and includes Comfort Contacts
  • Progressive Correction for Maximum Containment Stability
  • Totally Waterproof Collar Receiver, Uses the Perimeter Replacement Battery (6v battery).
56 new from $155.28 1 used from $152.95

$159.95 & FREE Shipping. Details Only 7 left in stock. Sold by Empire Pet Supply and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Invisible Fence® R21 Compatible Dog Fence Collar 7k Frequency
  • +
  • Perimeter Technologies Invisible Fence Compatible R21 and R51 Dog Collar Battery
  • +
  • PetSafe Boundary Flags, Bundle of 50
Total price: $177.66
Buy the selected items together

Product Description

Size: Progressive(starts low and goes up)

The Perimeter Technologies Computer ReceiverTM Collar is designed to replace your Invisible Fence brand R21TM collar or add a new pet to your existing Invisible Fence system for a fraction of the cost. The Perimeter Computer ReceiverTM Collar will work with your existing Invisible Fence brand 7K or 10K dog fence system. The collar receiver is completely waterproof and available in 2 frequencies, 7K or 10K (check your current transmitter to determine which frequency you need). Only Perimeter Technologies collars come with patented rubber Comfort Contacts - designed for your dog's added comfort and safety. The receiver weighs only 1.1 ounces, making it one of the lightest dog fence receivers available. The Perimeter Computer ReceiverTM Collar is proudly made in the USA by Perimeter Technologies. This ad is for the 7k Invisible Fence® is a trademark of Invisible Fence, Inc. Perimeter Technologies is not affiliated with Invisible Fence, Inc.

Product Details

Size: Progressive(starts low and goes up)
  • Product Dimensions: 4.5 x 4.5 x 2.5 inches ; 5.6 ounces
  • Shipping Weight: 5.6 ounces (View shipping rates and policies)
  • ASIN: B002QG0IUI
  • Item model number: PTPIR-003
  • Average Customer Review: 3.1 out of 5 stars  See all reviews (63 customer reviews)
  • Amazon Best Sellers Rank: #41,084 in Pet Supplies (See Top 100 in Pet Supplies)
  • Product Warranty: For warranty information about this product, please click here

Customer Reviews

Top Customer Reviews

Size: Progressive(starts low and goes up) Verified Purchase
I was surprised that this collar actually worked with my Invisible Fence system. I put it on the dog - no problems.
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Size: Progressive(starts low and goes up) Verified Purchase
We bought thus collar because it less expensive than the invisible fence collar. It worked great. Our one dog has an invisible fence collar and this one is actually better than that.
1 Comment 14 of 16 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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By V on July 30, 2012
Size: Progressive(starts low and goes up) Verified Purchase
I am shocked at the lack of service and waste of money, I ordered this product a month ago, and it doesn't work at all. The company has multiple websites which all look good, and all lead back to the same place - but no response to 3 different emails, and numerous phone calls. I thought maybe I was just unlucky, but after the lack of ANY response from the company I am completely convinced that all the websites are just an attempt to sell as much junk as possible with no intent to ever support these products. Fortunately Amazon was very helpful, because if I had to actually rely on Perimeter I would be totally sunk. I would avoid this company like the plague.
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By kimper on November 17, 2011
Size: Progressive(starts low and goes up) Verified Purchase
I was excited about this Perimeter collar - and saving money on a new Invisible Fence replacement collar after my younger lab chewed a collar off my older lab's neck. However the Perimeter collar did not work well for us. It did not pick up the signal at all in some areas and gave a delayed signal in others. I even called the manufacturer to get Tech advice. My younger dog kept going through because he did not receive a signal. When he could hear the signal, he retreated from the boundary but the signal was weak (or something) so I ended up returning it. We have a 700 series fence and a small yard. Even though it was $100 less, it was not worth it for us to only work "some" of the time.
1 Comment 13 of 16 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: Progressive(starts low and goes up)
This collar works well with my system. I loved that it came one size fits all. I adjusted the size of the collar to fit my pet and cut off the excess nylon. My branded Invisible Fence collar only fits one of my pets and I was unsure of the proper size I needed for the other.

Only issue I've had is similar to what another user has stated. The sensitivity range of this collar seems to be wider than my other. This one will beep at least a foot sooner than the other collar. So there is a little bit of a retrain on this collar but not significant.

The low battery indicator is a definite plus. My branded collar does not have that. I'm thinking of purchasing another of these collars for that very reason.
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Size: Progressive(starts low and goes up) Verified Purchase
The collar works great. It gives a warning beep instead of just zapping the dog, which we like. It also has the low battery indicator light which is good. Our only complaint is that every now and then it just beeps for no apparent reason. We may be in the house or no where near the fence and it will give off a warning beep which freaks the dog out because he doesn't know what he's doing wrong.
5 Comments 14 of 18 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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Size: Progressive(starts low and goes up) Verified Purchase
Moved into a home with an existing invisible fence. The fence had not been used in a few years and previous owner didnt leave a collar. Instead of shelling out 330.00 for a new one from the I. F. company, i thought i would try this one out.
So far, so good! The audible beeps work, I know the dog has gotten a shock as well. Save some cash and buy this collar!
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Size: Progressive(starts low and goes up) Verified Purchase
I purchased this collar a few weeks back. Shipping time was accurate and quick. I ordered an additional battery from the company that was supposed to fit as a back up, which it didn't. I tested the collar and nothing happened. I thought maybe the fence had a short and tested the line. After walking the entire property I used a meter to test the battery. Dead as a door nail, which is irritating. I can't put a good review because I haven't been able to use it.
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