Product Description

Invisible Fence R21 Compatible Dog Fence Collar ensures signal reception despite your pet’s location in relation with the barrier. This is made possible by the product’s patented antennas (three) that are designed omnidirectionally.

These collars are exclusive for ICT-700 series (ICT-700, ICT-725, ICT-750) fences. The product includes comfort contacts and works as an efficient substitute for your Invisible Fence brand R21. Receiver collar needs two batteries. The collars are waterproof. It provides your pets maximum security stability.

Features and Benefits

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The collars are extra comfortable because of the comfort contacts. The waterproof feature is useful especially when your dogs love wet areas.

It has the following correction that enables you to manage the system completely. You can either use the collar receivers as a substitute to the old ones or, you can purchase one to expand the number of pets that you want to train.

The receivers only weigh 1.1 ounces making it easy to carry and surely seamless to your pets. Electronics work well. The collar receiver is a great alternative if you need an extra collar for your new pet.

The collars have a battery indicator light that informs you when the receiver collars need charging. This product is better than having a leash to secure your pets; this gives your pet a sense of freedom and allows them to roam around the designated area freely. The collars are sensitive and have a more audible alarm.

Pros and Cons

Invisible Fence R21 Compatible Dog Fence Collar gives off warnings accurately that keeps your dogs inside the secured parameter as you desire. An extra collar is useful to family dogs that temporarily visit.

This way, multiple pets can be assisted at once without compromising their safety. The LED light helps in the convenience; emits the hassle of checking it from time to time. It works as well as the original collars. The levels of frequency must be closely monitored as to the previous system.

The receiver should be on the same frequency for it to work efficiently. Setting the flags on your desired areas will help your dogs learn fast. The beeps and zaps are not harmful to your pet’s physical and psychological health.

The product does its job without traumatizing your pets. The receiver collars worked well even when the system was not used for a couple of years; just make sure to know the series it is in and be knowledgeable of the frequency.

However, the collar seems to be of a great size that is not pleasant; it also gives extra work in adjusting; you might have to cut off the extra straps. Melting the tip would help to prevent fraying.

When your dog gets older and bigger, the beeps may grow weak and not frighten your pet anymore. The product does not work as advertised. Your puppies might not found these replacements pleasing to them.

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Sometimes, the signal may be inconsistent; it randomly alarms even when your pets are inside boundary lines. The collar scares your dogs thinking they have done something wrong because of the series of beeping. The collar is not compatible with every invisible fence; the batteries as the old system does not work with this product.

The lifespan of the product is short; it lasts for a year or so. The collar does not last long; you must buy batteries for 2 to 3 weeks. The beeps are faint which makes it hard for you and your pets to hear.

Your dog will run through the fence all the time, and the progressive level may teach your dogs that when they run fast, they would just endure it for a while until they reach outside the boundaries where it does not bother them anymore.

Dogs that like to chew stuff might found this collar worthy of eating. Pets can eat the product which is risky. The LED light keeps flashing green even when the batteries are low. Issues will be addressed at once.


Invisible Fence R21 Compatible Dog Fence Collar is handy though It might be a little bulky it is of light weight which makes it easy to carry.

The receiver collars work even in damp places and is a useful reminder for your pets. The beeps can depend on what kind of dogs you have and what their sizes are. Beeps may appear faint to large dogs and can be alarming for smaller dogs. The strap is designed to be adjustable and flexible to accommodate different sizes.

The product also comes with comfort contacts. Your pets might not like these replacements because of their previous support from the older one. The right fit and comfort contacts will ensure you of your pet’s healthy activities. For best performance, the frequency must be the same as the older system for it to be compatible.