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Compatible Collars & Straps

Invisible Fence® Brand R21 Computer Collars are extremely expensive and not as feature-rich as the compatible Perimeter Technologies dog fence collar. Invisible Fence® Brand dog fence systems use proprietary collars and batteries, which they sell at very high prices. Many people invest in an Invisible Fence® Brand dog fence system without realizing how quickly the cost of the proprietary components will add up. 

Perimeter Technologies has developed a dog fence collar that is 100% compatible with Invisible Fence® Brand 700 Series (and older) Dog Fences. The Perimeter Technologies collar is smaller and lighter, completely waterproof, and features comfort contact points and progressive correction. Most importantly, this Invisible Fence® Compatible Collar is available at a fraction of the price of the proprietary computer collars. The collar is available in either 7K or 10K frequency to match the frequency of your dog fence. 

Replacement Invisible Fence® nylon collar straps are also available. Please see the product pages for details on collar strap compatibility. 

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