Havahart Radial 2: Small Dog Review


  • Most Stable Wireless boundary signal
  • Rechargeable Batteries
  • Boundary Breach Alarm


  • Bulky Collar Base
  • No Battery Backup
  • No Quick Release Buckle


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Havahart Radial 2 Small Dog Overview

Summary: Small Dog Wireless System

The Havahart Radial 2: Small Dog, takes the class leading Havahart Radial 2 wireless fence and adds a lighter collar for use with smaller dogs. It is an excellent collar, but it is similar in size to the basic Havahart Radial collar, and only about 15% lighter.

Like the standard Havahart Radial 2, the Small Dog edition has excellent boundary integrity with boundaries that are more consistent, faster responding, and with more total coverage area than any other wireless dog fence.

The Havahart Small Dog also shares the limitation of wireless systems. You can have any shape boundary you want, as long as it is circular. You get boundary wobble. And the systems do not do well with obstructions such as wooded areas, downhill slopes, or large metal objects in the containment area. But, if these restrictions are not significant for your installation, this is an excellent system and a more convenient alternative to a wired fence.

Smaller Collar

The Havahart Small Dog uses the same collar box as the standard Havahart Radial 2. But, to save weight it uses a a smaller and lighter collar band than the standard Havahart system. This results in a small weight savings of around 0.6 ounces. You can use this collar with dogs as small as 15 pounds , a slight improvement on the 20 pound limit for the standard system, but nothing incredible.

2.8 Acre Capacity

The Havahart Small Dog has a maximum effective containment area of around 2.8 acre capacity, with a maximum boundary radius of around 200 feet. This is the largest capacity of any conventional wireless fence.

Class Leading Performance

The Havahart Wireless has notably superior boundaries than it’s wireless competitors. The boundary moves 60% less than it’s nearest rival the PetSafe Stay+Play, and a 85% less than the atrocious Perimeter Wifi.

Wireless Limitations

Conventional wireless systems such as the Havahart all have limitations compared to wired fences. The boundaries wobble around from moment-to-moment. They can also struggle in some properties, particularly where there are large metal obstacles or downhill slopes.

Havahart Radial 2 Small Dog Collar


The Havahart Wireless Small Dog collar is lighter than the standard model thanks to a slimmed down collar band. But, it is still on the large side. The collar is fully rechargeable.

Rechargeable Battery

The Small Dog collar uses an RCR123 rechargeable lithium ion battery. The battery is charged by undoing a hatch on the back of the collar, removing the battery, and inserting it into the supplied charger. The battery life is around ten days and a full charge takes about 2 hours.

Five Correction Levels

The Havahart Small Dog Radial has five correction levels that are set at the base station. The correction levels can be set independently on each collar, so you can have each dog on a different correction level. The correction level range is more than sufficient for small dogs.

Long and Short Probes

The Havahart collar probes can be unscrewed and interchanged. The system comes with both long and short option probes to suit long and short haired hounds respectively.

Rubber Strap with Integrated Antenna

The primary difference between the standard collar and the Small Dog collar included with this system is the slimmed down collar. Instead of the larger nylon cloth collar, Havahart has created a slim rubberized collar with a buckle closure. This collar is 0.6 ounces lighter and has a shorter band allowing for use with smaller neck sizes.

Like the standard collar, the antenna is integrated into the collar band for vastly improved reception. The tradeoff is that you cannot remove the collar band, nor exchange it for one of your own choosing.

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Best Wireless Collar

The Havahart collar outshines all competing wireless collars. In combination with the transmitter, they maintain a superior boundary which is more precise and more consistent than any other wireless system. In our standard testing setup, the average movement in the boundary was less than two feet (with the boundary set to 70 feet), outstripping its nearest competitors by a large margin.

Average Boundary Wobble (feet)
(a smaller number is better)

This boundary consistency makes training your dog much easier and allows the dog to enjoy more of your yard as they are more confident about the location of the boundary.

Big Collar

The Havahart small dog collar is lighter than the regular size collar, but still large. The Havahart collar weighs in at 3.8 ounces, and is only around 15% lighter than the regular size collar. Consequently, because of it’s size and bulk, we would only use this collar with dogs over 15 lbs.

The PetSafe Stay+Play has the smallest wireless dog fence collar, and can be used with dogs as small as 12 lbs. Wired systems such as the PetSafe Little Dog offers a collar less than half the size and weight.

Havahart Radial Small Dog Transmitter

Wireless Transmitter

The Havahart Radial transmitter is placed in the center of the containment areas and wirelessly creates a circular boundary. The boundary radius and all other functions are set at the transmitter using the LCD onscreen menu.

2.8 Acre Maximum Capacity

In our field tests, the Havahart was able to effectively contain 2.8 acres (200 foot boundary radius). This is the largest effective coverage of any conventional wireless system we have tested. It is however, not as good as the 11 acre (400 foot boundary radius) capacity claimed on the manufacturer’s specifications.
Note, the 4 base-station Havahart Custom, and the GPS Border Patrol TC1 both have larger effective ranges, but do not work as well as the Havahart Radial and are more than twice the price.

Only Circular Boundary

Using conventional wireless systems such as the Havahart Wireless Small Dog, you can have only have circular boundaries. (An exception to this is the new $800 Havahart Custom, which allows you a completely custom shaped boundary. But, as well as being more expensive it does not have as accurate boundaries). Having only a circular boundary often leads to part of your yard being off excluded which can often significantly limit the dogs play area in small yards.

The sweet spot for these wireless systems is large open yards, where you want to give the dogs plenty of room to play, but want to keep them from staying too far from the house.

Boundary Challenge Alarm

The transmitter alerts you when your dog attempts to cross the boundary by sounding an alarm. This lets you go outside and check on your dog to make sure they are still safely contained. This is particularly useful for keeping an eye on the dog in the early days when the dog is still getting accustomed to the fence.

Easy Wireless Installation

The primary advantage of wireless systems like the Havahart is that they don’t require you to lay any boundary wire like the wired systems. This makes installation much faster and easier. Just plug in the transmitter, set the boundary radius distance, planting the boundary flags, and you are ready to start training your dog.

From start to finish, the installation time for a wireless system will usually take under 15 minutes, compared to several hours if you opt for a wired system.

The wire free installation also makes wireless systems superior for situations where laying wire is infeasible. For example, setting a temporary boundary at a holiday home, or at some other temporary location.

Doesn’t Like Obstacles

Like all wireless systems the Havahart transmitter has difficulty getting a signal through some obstructions. Wooded area, large metal objects, and steep downhill slopes can all cause problems with signal reception and cause the system not to work properly.

While it is hard to predict whether the system will work in any particular home, a good rule of thumb is that if you can get a direct line of sight (imagining all the house walls were made of glass), then you can probably get a good signal. If obstacles are blocking line of sight, then there is likely to be interference and you would be better off with a wired fence.

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Havahart Radial 2 Small Dog Accessories


The basic system includes a battery charger, 75 boundary flags, and a collar tester tool.

Battery Charger + 2 Batteries

The Havahart includes a battery charger along with two rechargeable collar batteries. The decision to include two batteries is commendable, allowing you to charge one battery while the other is in use.

Collar Tester Tool

The collar tester is held against the collar prongs, and lights up when the collar correction is activated. It is used to test that the system is working properly. You will also use the tester tool when to help you determine where the boundary line is located when you set up the system and lay out the marking flags.

Havahart has made their collar tester heart shaped for extra cuteness. Awww …

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75 Boundary Flags

The standard system comes bundled with 75 boundary marking flags. The flags are used to mark the location of the boundary for the training phase, to help your dog to learn the containment area. As your dog learns the boundary, you will gradually remove the flags until they are completely gone.

The included 75 flags are sufficient to cover just under ½ an acre. If you need additional boundary flags, they are available cheaply ($10 per 50) in our store or at any big-box hardware store.

Havahart One Year Warranty

One Year Warranty

The Havahart Radial 2 Small Dog comes with a one year warranty. We find Havahart service can be slow, but in the end they deliver.

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The Havahart Radial 2 Small Dog is gives you a slightly lighter collar than the standard Havahart Radial system. It is not truly a small dog collar, but is at least a little lighter than the standard collar.

Like the regular Havahart Radial, this system is an excellent wireless system, outperforming its competitors by a large margin with superior boundary consistency and a larger maximum containment area. The system also has all the nice to haves like a rechargeable lithium ion battery and a boundary challenge alarm.

Like other wireless systems there are drawbacks to using wireless technology. Most notably, you can only have a circular boundary, you can encounter interference from downhill slopes and large metal objects, and you can only put two dogs on the system at the same time.

But, in return for putting up with these drawbacks, the Havahart gets you a lot of convenience. The system can be fully installed in 15 minutes and is much more portable than a traditional wired dog fence. For a wireless system, for a dog in the 15 – 30 pound range, this is a great choice.

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Havahart Radial 2 Video Review

Video: Havahart Radial 2 Review

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Havahart Radial 2 Manual

Havahart Radial Manual

Click for the Havahart Wireless Instruction Manual (PDF). Click here for the Havahart Wireless QuickStart Guide (PDF)

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Boundary Radius (feet) Area (acres) Flags Required
50 0.2 50
75 0.4 75
100 0.7 105
125 1.1 125
150 1.6 160
175 2.2 210
200 2.9 235
Model Havahart Radial 2
Type Wireless
Collar Battery Rechargeabe (Lithium Ion)
Correction Levels 5 Levels
Beep Only Training Mode Yes
Collar Warning beep Yes
Collar Vibration No
Independent Correction Levels Yes
Collar Dimensions 3.3” (L) x 1.3” (W) x 1.3″ (D)
Collar Weight (with band) 3.8 ounces
Collar Weight (without band) N/A – Integrated Band
Collar Neck Size 7″ – 17″
Collar Water Resistance Water resistant
Collar Fit Test No
Maximum Number of Dogs Two
Minimum Dog Size 20 lbs
Minimum Age 6 months
Maximum Containment Area 2.8 acres
Boundary Radius 40 – 200 feet (adjustable)
Control Box Dimensions 12″ (L) x 6.5″ (W) x 1.2″ (D)
Control Box Power Source Wall Outlet (110V)
Control Box Battery Backup No
Indoor Pod Compatibility No
Outdoor Pod Compatibility No
Included Boundary Flags 75
Training Materials Manual and Quickstart Guide
Other Collar tester tool
Package Dimensions 12″ (L) x 10″ (W) x 6″ (D)
Package Weight 4 lbs
Warranty One Year

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Containment Guarantee

Your dog will be completely contained to your satisfaction within 30 days, or we will give you a full refund. That is a better deal than you would get from a $2,000 invisible fence. You have nothing to lose.

FREE Dog Fence Guide

experts guide

The Havahart Wireless come with a FREE copy of our Dog Fence Experts Book on installing a dog fence and training your dog (instantly downloadable in PDF form). The book has 90 pages of great information and tons of illustrations to make installation easy, and training effective. It will save you hours and get you complete containment faster.

You get the book immediately with your purchase. Your order confirmation email will include an instantly downloadable copy of our book. Value $24.95.

30 Day Easy Refunds

easy returns

If you are unhappy with your purchase for any reason you can return your system within 30 days for a full refund of your purchase price. Getting a refund is easy, just email us at returns@dogfencediy.com or call on (888) 936 – 4349.

Our returns are easy and hassle free:

  • It is no problem if you used the system, that was the point! We will still take it back even if there is some wear-and-tear
  • Did you use the system and get it a little scuffed. No problem.
  • The 30 day period starts from the time you receive the package so you have plenty of time to do the installation and training. If you need a little extra time, let us know.
  • The only time we don’t take returns is if it is well after the 30 days, or the unit is seriously damaged.

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12,000 Happy Customers

We had more than 10,000 happy customers last year, and are hoping to have even more in 2012. We understand how important it is to keep your dog safely contained, and understand the trust you place in us when you make an order. We want to make containment as easy as possible. We value your business, and we want you to refer your friends.

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We strive to have the lowest prices of any Havahart authorized retailer. If you find any of our products at a lower price from an authorized retailer, please let us know and we will be happy to match the price. For a price match, call us on (888) 936 – 4349 or email pricematch@dogfencediy.com.

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{ 2 comments… read them below or add one }

Frank Wright September 10, 2013 at 11:40 am

We live on a farm that is over 200 acres and have 2 beagles. We were looking at this system, but are wondering if it would work in reverse. In other words, we want to have the fence around the house and keep the dogs outside the boundary created by the fence. Will it work that way? Also, if we put the transmitter inside the house, is it likely to transmit through the walls well enough to work?

ADMIN – Hi Frank, you can accomplish this with a wired fence, but not a wireless fence. I would recommend the SportDog for two Beagles.

Sophie Zak June 4, 2013 at 8:01 am

Hi, my little dog is only 5 lbs, can I use this system, or the electric current might be too strong and harmful to a smaller dog than the recomended 15 lbs?

ADMIN – Hi Sophie,

5 lbs is going to be much too small to be a Havahart Wireless (or any of the wireless systems). The issue is not that the correction is too strong, you can turn down the correction level and find a setting appropriate for smaller dogs. The issue is that the collar is going to be much too big and heavy for your dog to be comfortable wearing.

For a dog that small, the only good option is the wired, PetSafe Little Dog system, which has an ultra-small and ultra-light 2 ounce collar.

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