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Invisible Fence® replacement system

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  • Invisible Fence® replacement system
Invisible Fence® Replacement System

Model: InvisibleFence®Trade

Availability : In stock


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Regular Price: $299.95

Our Price: $249.95

Regular Price: $299.95

Our Price: $249.95


Digital Frequency Encoding: The digital frequency encoding is a handy feature if you think a neighbor may also have an electric dog fence. This tech feature eliminates stray signal interference from neighboring dog fence systems and other signal generating devices. Nearby dog fence systems and other devices that generate similar signals can interfere with your electric dog fence causing signal interruption or unreliability.

Small & Lightweight: The Perimeter receiver collar is one of the lightest and smallest collars in the industry (surpassed only by the small dog specific PetSafe Elite Little Dog). Weighing in at only 1.1 ounces it is suitable for dogs right down to 8 lbs. For dogs smaller than that you'll want to go for the PetSafe Elite Little Dog, which tones down the correction strength in addition to the small collar size)

Comfort Contacts: The Perimeter Ultra receiver collar uses unique conductive rubber contact points to increase collar comfort for your dog. While the comfort contact points conduct the correction just like metal contact points, they are softer and less irritating on your dog's skin. The comfort contact points make this system the number one choice for dog's with sensitive skin. 

4+1 Individual Correction Settings: The small Perimeter Ultra collars are capable of 4 unique correction level settings and 1 progressive setting that automatically increases as the dog continues towards the boundary line. Each collar on the system has its own correction level but rather than being set on the collar itself, they are set at the transmitter. The unique correction level settings and lightweight collar make this a good choice for multi-dog households where all dogs are 8+ lbs.

Battery Check: The patented Battery Check feature ensures you only change the battery when it is truly depleted. The Battery Check feature auto-activates every two hours to ensure you know as soon as your battery is low. Since battery output fluctuates depending on the environment and other factors the Perimeter collar requires 3 consecutive low battery triggers to set off the low battery indication.

Exceptional Waterproofing: Because the Perimeter collar does not have any buttons or dials on the collar itself, the waterproofing is really perfect. The collar can be fully submersed while functioning. Because of this feature we recommend the Perimeter Ultra dog fence for rainy climates as well as lake front installation or yards with ponds or pools.  

Disposable Proprietary Battery: This collar uses a disposable proprietary battery. Most people prefer a rechargeable battery, a generic battery is second best because it's easy to get your hands on. The proprietary battery is generally our least favorite but does have it's virtues in this case. The Perimeter proprietary battery has a pretty impressive 4-6 month lifespan and their superior tech features include a sophisticated battery indicator that detects a true low battery so you only change it when it is depleted. For some people a battery change every 4-6 months is preferable over remembering to recharge daily. 



Multiple Frequencies: The standout feature on the Perimeter Technologies transmitter is the multiple frequency selection. This feature ensures that your dog fence will work, uninterrupted, even if your neighbors install their own dog fence or there are other signal emitting devices around. 

Adjustable Boundary Zone: The boundary zone width adjustment on the Perimeter system is completely digital so you can make really precise adjustments. The zone width can range from just a few inches to 32 ft. and the system is capable of remembering and returning to past settings. 

Temp Check & Wire Check: Perimeter Technologies is known for their attention to detail and techie system components. Their patented Temp Check and Wire Check diagnostic features automatically sense and adjust for temperature and electrical changes that could impact the performance of the dog fence boundary wire. This may seem unimportant in average climates but can actually make a significant difference in very cold temperatures or areas where the power is spotty at times. 

5Acre Capacity: The Perimeter Technologies Ultra PRO-Grade dog fence is capable of installations of 5 acres or less. While other fences in the same price point offer greater coverage, 5 acres is more than enough for most urban and suburban properties. 

Lacks Battery Backup: Surprisingly, despite all the tech savviness at Perimeter Technologies, this system lacks battery backup in case of power failure. While the transmitter is very reliable, if the power goes out and the boundary goes down, your dogs will be unprotected. 

You can expect it to take you a day or less to get your dog fence installed. You don’t even necessarily need to bury the wire. You may choose to secure the wire to the ground using dog fence staples. You can also staple it to a structure that is already present, such as a fence or a wall. It just depends on the terrain in your yard. In wooded areas, you can definitely secure the wire to the ground where there are rocks or tree limbs present. If you do decide to bury the wire, 1-3 inches is plenty deep enough. Using a power edger to create a trench will make the job easier for you. If you take a look at this link, it outlines all the specifics on how to install your electric dog fence: https://www.flexpetz.com/wire-installation. Also check out this page for full installation details, it may seem a little overwhelming but for the most part installing is relatively simple and requires nothing more but a little back bone and some really basic tools, but we have covered every possible detail of installation on this page https://www.flexpetz.com/dog-fence-installation just click on the link and let us know if you have any questions....we are here to help.

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  1. 5 thumbs up! Review by Ozzy

    This replacement system beats paying $474 for a brand new IF boundary plus collar and does the same function. Glad I made the switch especially after reading this site I feel like a Dog fence Pro.
    Thank you again.

    (Posted on 1/22/2016)

  2. You all were right. This was easy to swap for my old Invisible Fence parts Review by Archie Moll

    I was really tired of paying an arm and a leg to Invisible Fence for everything. I used the trade in program to get a rebate on the Invisible Fence parts and ordered this replacement kit. It was as easy as Jonny said. Just disconnect the wires from the old box and plug them into the new box.
    I'm glad to be into something more affordable but just as good.
    Thanks Flexpetz and Jonny for the help. (Posted on 12/28/2015)

  3. Great Product Review by Julia Stanford

    I was glad to get this fence system with just the wire and the collar because I had everything else. (Posted on 11/24/2015)

  4. Glad to save money Review by Paul Pickett

    Boy was I glad I found Flexpetz, offering this invisible fence replacement program. I bought the Perimeter transmitter and collar and sent in my old transmitter and got a credit on my bank card the same day. The system works just like the Invisible fence system. (Posted on 11/14/0015)

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Comment / Questions about Invisible Fence® Replacement System

Steve Fox
April 22, 2016

I live on 5 acres of flat land, and wish to keep my 2 dogs contained. Please tell me what transmitter, and collars would best serve my purpose. I wish to up grade to the 14 ga under ground wire. How mush wire will be needed for 5 acres.


Hi Steve,
Thank you for reaching out to us, for me to be able to recommend the right system to you, can you tell me what breed of dogs you have?
Also for 5 acres you would need 2200 feet of wire. The way we sell wire here is in 500 foot increments and we can make those increments continuous spools for you.
I will be waiting on your response to get you an accurate fence for your pets.

Julie Angulo
Sales and Support Leader
800-396-5517 Toll Free

We have the FREE Tech support to make this DIY project easy for you.

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