Invisible Fence R21 Compatible Dog Fence Collar (PTPIR-003)
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Invisible Fence R21 Compatible Dog Fence Collar (PTPIR-003)

Made in USA
Free Shipping in the 48 Continental StatesArrives before Christmas
Invisible Fence R21 Compatible Dog Fence Collar (PTPIR-003)infer21codog
Our Price:$159.95
List Price:$169.95
Invisible Fence R21 Compatible Dog Fence Collar (PTPIR-003)Perimeter Technologies
Pet Supplies, Dog Supplies, Cat Supplies
Invisible Fence R21 Compatible Dog Fence Collar (PTPIR-003)
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Invisible Fence R21 Compatible Dog Fence Collar PTPIR-003

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The Perimeter Technologies ComputerReceiver™ Collar is designed to replace your Invisible Fence brand R21™ collar or add a new pet to your existing Invisible Fence system - and for a fraction of the cost!

The Perimeter ComputerReceiver™ Collar will work with your existing Invisible Fence brand 7K or 10K dog fence system (excludes Invisible Fence 800 series dog fences - see compatible transmitters below).

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 ComputerReceiver™ Collar is proudly made in the USA by Perimeter Technologies.

Features of the Perimeter ComputerReceiver™ dog fence collar:

  • Patented three antenna, omni-directional design ensures signal reception regardless of the pet's orientation to the fence
  • Replaces Invisible Fence brand R21™ Collar and includes Comfort Contacts
  • Each collar comes with one pair of rubber Comfort Contacts™
  • Progressive Correction for Maximum Containment Stability
  • Totally Waterproof Collar Receiver
  • Two Adjustable Frequencies (7k or 10k)
  • Two sets of Contact Posts (1 Pair Rubber Comfort Contacts, 1 Pair Medium Steel Contacts)
  • One Lithium Ion Battery Pack
  • One Adjustable Nylon Collar
  • Extremely Small & Lightweight Receiver Weighs in at Only 1.1 Ounces
  • Designed and Manufactured in the USA
  • Limited Lifetime Warranty

The Perimeter ComputerReceiver™ dog fence collar works with the following Invisible Fence brand transmitters:

  • ICT700
  • ICT725
  • ICT750 (Gray Case)
  • ICT775 (Gray Case)
  • Invisible Gate™
  • ICT250 (Dark Blue Case)
  • ICT100 (Dark Blue Case)
  • ICT100A (Dark Blue Case)
  • ICT75 (Dark Blue Case)
  • ICT50 (Dark Blue Case)
  • AT950 Indoor Transmitter
  • CT4000

Please note that the ComputerReceiver™ will not work with:

  • Perimeter Brand Fence systems
  • Invisible Fence 800 series fence systems
  • Shields™ Indoor Avoidance transmitters
  • Not a replacement for the Invisible Fence Titanium series dog collars

User Manual for R21 Collar.

Designed and Manufactured in the USA

Limited Lifetime Warranty


Q: What frequency of R21 collar should I get?
A: If you have already have a R21 collar and is getting an additional one, please make sure that you get the same frequency as the other collar so that they will work together. Your transmitter allow you to set frequency to either 7K or 10K; so if you lost your collar and is getting the R21 collar as a replacement collar, you can choose either 7K or 10K and just set your transmitter to the corresponding frequency.

Q: I have a Rottweiler and was wondering if this collar will fit?
A: Yes, this R21 collar is one size fits all. It will fit on any kind of dog.

Q: Where can I change the frequency of the transmitter?

A: You should be able to open up your Invisible Fence transmitter and locate the switch between 7k and 10k. Please see below.
Invisible Fence R21 collar, invisible fence collar, perimeter technologies collar

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